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FEDERAL BUREAU OF INVESTIGATION 
FOI/PA 

DELETED PAGE INFORMATION SHEET 
FOI/PA# 1229190-0 


Total Deleted Page(s) = 1 
Page 44 ~ Referral/Direct; 


XXXXXXXXXXXXXXXXXXXXXXXX 
X Deleted Page(s) X 
X No Duplication Fee X 
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?-ik 6 fr-r /Y/ioitfT 5fe/?/e<s S£T^s7-< o rnesJ-f^ 


rTANOARO FOKM NO. 64 



Office Memorandum 



• UNITED STATES GOVERNMENT 


*1 


TO 

FROM 
SUBJECT: 


'Mr. R. T. Harbo tiih 
I. W. Conra' 


'/& 



DATE: AUgUSt 20 , 19$2 


OLL LINE FOR RADIO AND ELECTRICAL SECTION 


Reference Is made to the Executives Conference 
memorandum to the Director dated Hay 29, 1952 regarding 
Research Project Technical Surveillances. 



***.— 


■ T»l#« flOQ * , 

Arrangements have now been made through a confidential 

Informant of the telephone company to obtain 3 different types s “ w — ~ 

of telephone pay-type instruments normally referred to as coin 
collectors. In order to continue the project further under all 
standard conditions. It Is now necessary to obtain a to 11- type 
line under the control of Laboratory personnel to complete the test 
In these collection Instruments. 


RECOMMENDATION 


It Is recommended’ that arrangements be made through the office- 
of Chief Clerk to obtain -a telephone line for connection in room 7311* 
for coin collecting service. 


RFPtvrh 



I 

% 



67SEP22195^> 



DAT£-£F*REMOVAL 


DATE OF HAIL 






/ 


.HAS BEEN REMOVED FOR MR.,‘LAMPHERE.TO BE KEPT PERMANENTLY. IN ‘'HIS 
'OFFICE; room; 1736 


SEE FILE 66-2554-7530 FOR '‘AUTHORITY. 


SUBJECT JUNE MAIL . 


REMOVED B Y ^0 1952 ' 

FILE NUMBER gy - yr/~ 


i PERMANENT SERIAL CHARGEOUT 


HAS BEEN REMOVED .FOR ;MR. LAMPHERE TO BE KEPT PERMANENTLY IN HIS 
OFFICE, ROOM 1736 


SEE :FILE' 66-2554-7530 FOR AUTHORITY. 


SUBJECT JUNE MAIL 


REMOVED B Y NOV 2 1195 ? 

FILE NUMBE R j£jLsi. 

PERMANENT. SERIAL CHARGEOUT 


DATE OF MAIL 


/± / Sd 
/ / ” 


HAS ; BEEN REMOVED FOR MR. -LAMPHERE :TO BE KEPT PERMANENTLY IN HIS 
•OFFICE,. ROOM 1736 • 


•SEE FILE 66-2554-7530 FOR AUTHORITY. 


SUBJECT; JUNE MAIL 


.REMOVED," BY, 


51 DEC 2 3 1952 


FILE NUMBE R ~ 7 J* / ~ V' 


PERMANENT SERIAL CHARGEOUT 


HAS BEEN REMOVED FOR MR. LAMPHERE TO .BE KEPT .PERMANENTLY IN . HIS 
OFFICE, ROOM 1736 


SEE FILE 66-2554-7530 FOR AUTHORITY. ' 


• SUBJECT'- JUNE MAIL 


51 DEC 23 1952 

“REMOVED BY 


file; numbe r jPj ~7J/' «S 

PERMANENT 'SERIAL CHARGEOUT 


DATE OF MAI L /X* / /£> 

/ 


'■TZ.. 


HAS' BEEN 'REMOVED ‘ FOR MR. :LAMPHERE TO BE KEPT -PERMANENTLY IN .HIS 
.OFFICE, ROOM 1736 


SEE FILE 66-2554-7530 FOR AUTHORITY. 


SUBJECT JUNE MAIL 


-REMOVED BY_ M 2E£MM2 
FILE MDMBE R ^ 7S/~ 

PERMANENT SERIAL CHARGEOUT 


DATE OP MAI L 9 ~ 


HAS BEES REMOVED FOR MR. LAMPHERE TO BE : KEPT ‘ PERMANENTLY IN HIS 
OFFICEi ROOM 1736 


SEE PILE 66-2554-7530 FOR AUTHORITY. 


SUBJECT JUNE MAIL 


REMOVED B yK 9 OHT 1 
PILE NUMBER % °' 7 7 


PERMANENT > SERIAL CHARGEOUT 


if 


SAC, Itewyortc (66-1403A) 

REC- 27 

Director, FBI (80-781) $ 

CONEDDENCER MICROPHONE 

ROANWELL CORPORATION 

The Bureau appreciate* the report concerning the effectiveness of 
the Confidencer which you furnished in your 6-27-60, letter under the 
above caption. Other Held offices will be advised of the advantages and 
availability of this type of microphone. 



Since the installation oftheseunitson a trial basis in your office, 
it has been determined that Bell System telephone companies haveiadopted 
the Confidencer as a standard item to be furnished subscribers on request* 
An Installation charge ie not contemplated, but there will be a continulng 
monthly charge of approximately $. 75 for each unit. Therefore/ additional 
units should not be purchased directly from the Roanwell Corporation for 
use on telephone company Instruments. 


Jn the interest of maintaining good relations with the telephone 
company and the Roanwell Corporation, any of the six units now in use on 
telephone company instruments should be removed and the telephone 
company requested to install Confidencer* on the same instruments. If 
there are no privately owned handsets, such as those on. radio transmitters, 
on which the removed Confidencers may be used to advantage in yOur 
office, they should be forwarded to the Bureau for use in other offices. 



I 




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'/'<■ . xx.'i /r - 

* * $TAJ*>AXyrO«M NO. W 

c# Memorandum • united stMes government- 


to : DIRECTOR, FBI date: 6/27/60 

ATT: FBI LABORATORY-ELECTRONICS SECTION 


FROM 


YORK (66-1403A) 

2/ 6 l Sirtb 

CONFIDENCER MICROPHONE // A^U7// rTZT/ZZtrZ l/JS?7^iA1 (r/Z/K 

ROANWELL CORPORATION ^ — - ' 



At the suggestion of Bureau Supervisor ROBERT SLAGER, 
this office procured and placed in service 6 Confidencer 
microphones manufactured by the Roanwell Corporation, 

180 Varick Street, New York .14, :New York. These 
confidencer microphones are direct replacements for 
Western Electric microphones used In standard telephones. 


The confidencer has the property of transmitting 
only voice signals spoken in close proximity to and directly 
into the microphone. It nullifies or completely eliminates 
background noise and talk. The six procured by this office 
were placed in service in the radio dispatching ro om and In 
four other telephones where It was desired to minimize the 
possibility of r adio traffic being overheard In the course 
of telephone conversations when these phones are In use. 


i 





Since placing these confidencer microphones in use 
their effectiveness has been closely checked.. It has 
been found that they are completely satisfactory In use 
in the telephone instrument and that they are most effective 
In reducing background and side noise. In view of this 
successful application. It is felt that other offices might 
have use lor confidencer microphones particularly in offices 
in which the switchboard operator also handles -radio traffic 

, Orders for confidencer microphones may be placed 

direct with the .Roanwell Corporation at the address given above. 
The type of telephone instrument In -which the confidencer is 
to be used or the number of the carbon .microphone. It will 
replace must be specified to that the .proper model df 
confidencer lor direct replacement can be supplied. The cost 
of these confidencer microphones id $12.00 each. 



v2> f£ r f a £_ 

1 “ New York ( 66-140 3A) 


r 0 (-1 - FBI LABORATORY-ELECTRONICS SECTION) 


CS SECTION) . X . 


REG- 27 


CVDrhd 


2P3 JUL 16 110 


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No. 60-36 * *° f** 

SjjBjjrs X //s TK0hi£ ^*$ 

(G) USE. OF CONFIDENCERS ON TELEPHONES IN-mrsr.LOCATIONS -r The 
Bell Telephone. Companies are now offering a special type of micro- 
phone, for use in telephone; instruments in noisy locations.; This 
tinit> known as a Confidencer, is a noise-cancelling microphone 
manufactured by the. Roanwell Corporation, _l80 Varick; Street, 

New York 14, New York.; It. is designed as a direct replacement 
for the. standard El or Tl mouthpiece microphones Used in. Bell. 
System and Western Electric instruments. There are. two models, 
the R-CO for the. 200, 300 and 400 series, telephones; and the C-500 
for the 500 type set. 


The Confidencer serves to cancel out. much, of the outside; 
or background noise, normally picked Up by the regular microphone.; 
At the same time, the. voice spoken, directly into it is transmitted 
with, clarity and proper volume. Sound originating at. an angle, 
to the Unit is reduced considerably in volume, so the mouthpiece; 
must be held directly in front of the User's lips, and not. off to; 
One side or down on the chin. The. Confidencer may be; Used to 
advantage where background noise, interferes with the intelligi- 
bility of conversation or where it is undesirable that any back- 
ground conversation be Overheard by an outside; party . : This, may 

occur at locations such as reception desks. Number Three Register 
desks and radio dispatching rooms. 


You are authorized to Use Confldencers at those locations 
where their features will serve, a. definite' purpose. They are not 
'to be* installed on.‘ an indiscriminate, basis due to the extra expense 
involved. The local. Bell System, company will supply Confidencers. 
for instruments serviced by them. Usually, there is no service, 
(installation) charge, but there will be a continuing monthly 
charge Of approximately 75 cents for each Unit.; For privately 
owned Western Electric type handsets, such as those used on radio 
transmitters, the; Confidencer may be purchased from the local 
distributor of Roanwell products’ ' at $12 ; each. If Unavailable 
locally, the Units may be ordered through the Bureau. 


All contained 

JftlL. 





NOT RECORDED 

. J 1 1 ‘^SO 


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1 



SAC, San Francisco (66-440) 

Director, FBI %0- ( 


CONFXDENCER MICROPHONES 


August 9, 1960 



« r% 

! 

Reurlet 8/2/60, requesting that the Bureau furnish three 
R-CO Confidencer abler ophonesior use in critical loeatlons in your office. 1 

' i 


Referenced letter does not Indicate whether you intend to use 
these units on Western Electric type handsets for Bureau communication 
purposes in your office, or in Bell System telephones. S the former is the 
case, the Bureau will obtain and forward them to your office. However, 
if you Intend to install them in Bell System instruments because they cannot 
be obtained from thelocai telephone company, you should suggest to the 
local company that these units are obtainable from the Roanwell Corporation 
180 Varick SL , New York 14, N. Y. The Bureau does not "wish to place 
Itself in the position cf installing ’foreign" equipment on official telephone 
company lines if the company can simply the same service. 





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Id W3G181960 


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'MAIL ftOMiS£2/ TELETYPE UNIT „GI 


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joamd rofy^NO. 64 4 


ffice Mem^andum • united stotes government 


DIRECTOR,; FBI 


DATE: August 2, I960 


FROM 


IG^SAN FRANCISCO (66-440) 


subject: ^ CONFIDENCER MICROPHONES ATTENTION: ADMINISTRATIVE DIVISION 

W Lull. AW Fite M^FT HA»ar0A,a 

• Reference is made to SAC tetter 60-36, pointing 
out the security advantages in the use of confidencer 
microphones in critical locations. 

S An attempt to secure these microphones locally 

^ has disclosed that they are not distributed in this area. 

(J It is requested' that the Bureau, furnish to the 

*S San Francisco Office three Model R-CO confidencer microphones 

N N^for use in critical locations. 

V Y (^Bureau 

' \ '1-San Francisco » 



STANDARD FORM N&M 


, Office MemMmdum • 

# „ , 




\ 


*RO 


Director, FBI 

Mexico (66-5) 


'^f^egat. 


UNITED STATES GOVERNMENT 

DATE: 8/15/60 


SUBJECT: 


USE OF CONFIDENCERS ON TELEPHONES 
IN NOISY LOCATIONS 






iqi 


Re SAC Letter #60-36 dated 7/19/60. 


On 8/10/60 
of the Ericsson, S. JTT 


Sales Representative 
^company;, located at Maestro 


Antonio Caso #205, P. 0. Box 9958, Mexico, JD. F., advised 
that the Ericsson Conpany does not have In Mexico any 
special type of microphone for use in their telephone 
•instruments in noisy locations. 


v > 


Mr. 


advised that the microphone 


used In the Ericsson handset presently in use with the 


switchboard at the Legates Office, Mexico, D. F.., Is .an 
Ericsson carbon microphone, type #A10. The latter. 


according to Mr. 


] means .a 100 OHMS resistance 

— 1 _ _ - i * _ 


sUi with regai»d to the carbon microphone.. THls microphone 
5^ if measles 2" In diameter and 3/*" in depth. 


Referenced SAC letter advised that there are 
two models of confldencers, the R-CO for the 200, 300 and 
400 series telephones, and the C-500 lor the 500 type set 


il 


used in Bell systems and Western Electric instruments 

W 

The Bureau is requested to advise if the knovrti " 
confldencers mentioned in referenced SAC letter may be used 
in the above-described Ericsson handset, and if so, It 
Is suggested that the model adequate for use in the Ericsson) 
handset used with the switchboard at the Mexico City Office 
be forwarded Xegat, Mexico. 


i 


It is noted th^t if the above request cannot be 
fulfilled without further knowledge of the specifications 
of the Ericsson carbon microphone A10, possibly an extra 
microphone of the same type may be forwarded to the 
Bureau for examination* upon the Bureau's specific request, 
/ I 't'J'* A * , .j l . i J‘ 



( h i 


2 - Bureau 

1 - Mexico City 

EER/bje 

(3) 


’ -/ 1 09 ^ Jf/ - JO 

iV - } 


6^ St^ X idoU 



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' i i iM44~ii£u i : c ;! 



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* * 





SAC, Kansas City (66-470) 
Director | FBI (80-781) - ff 

7 nt % - 56 

TELE-MATE 
EXEC-U-FONE 
1 TECHNICAL EQUIPMENT 


September 8, 1960 


Reurlet 8/31/60* Captioned as above reporting I I 

offer to make available one of the captioned units lor examination in the 
FBI Laboratory. An examination of the photographs submitted With referenced 
letter does not indicate that there is anything new or novel about the device, bg 

therefore no purpose would be served by sending a unit to the Laboratory. b7c 

, s * 

Your interest as well as that of Mr. |~ | in bringing this to 
the Bureau 's attention is appreciated. You should be certain that the contacts 
with l ~l are not interpreted by him as an interest in nor an endorsement of 
bis product. " 

.Qit> ynf - . 

CKC:cay?(5) • 1 


O'i ^ 
*** '*03 
to? 

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ft § 

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. ■ $ ft 

tPTZISKp U r-, 

MAlCrtOOM ITEy^rSterYPE .UNIT uJ 





, ^.^stANDAAO FO*M NO. W 


/ Office Memmmdum united stM-es government 


to • DIRECTOR, FBI 

' ' ATTENTION FBI LABORATORY 


DATE: 8/31/60 



from ^^SAC, KANSAS CITY (66-470) 


SUBJECT 1 : 


l . 


J> 



E-MATE 
SlXEC-U^FpNE 

I I Prairie Village, K 


1 Prairie Village, Kansas, 

Kansas Representative for Ship and Shore blouses, advised 
that he was interested in the distribution of the Tele- 
Mate Exec-U-Fone which, he exhibited and made available to 
SA I I of this office. He indicated that 

the device was distributed irom Los Angeles and is of 
definite value .to facilitate the handling of telephone 
conversations. 

Photographs of .this device are enclosed showing 
how it is used with a conventional telephone to amplify 
the voice, received over the .telephone 'So that a person or persons 
can hear the voice without havii^'the telephone to his ear. The 
person receiving the -call can- also talk through the device so 
that he does not have to have the mouth piece of the telephone 
near his mouth to be heard. 


b6 

b7C 


^pointed out that this device is of definite 


aid’ in business affiliations where a person needs not only 
to have both hands free in taking an order, but to be able 
to move <around in the room such as a< druggist taking calls 
while he is .going about f his work filling a prescription. 


l also pointed out that it is of definite value 
when more than one person.wants to be a party to a telephone 
conversation. 

(3 

Kansas City (66-470) 

(1 file 66-3104) 

RVH : d j n 
(5) 



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' KC 66-470 





I I stated that the regular price per unit for 

this device is $34.95. Purchased in quantity, the units are 
priced as. follows: 

Over 48 units $24.50 each 

Over 24 units $26.50 each 

Over 12 units $29.95 each 

These prices are FOB, Kansas City. He can provide a choice 
of the colors black, ivory,, and beige. 

This device was shown to l l of the Kansas 

City Police Department and he stated that he had not seen 
the unit before, although he understood that the telephone 
company had a similar unit for distribution. 


has previously indicated that the 
telephone company would have a similar product but explained 
that the charge for it was about $75, twice the amount of 
the Tele-Mate phone. 

This information is; forwarded to the FBI Laboratory 
so that they will be cognizant of this type ! of ' product being 
distributed on a commercial basis. 

It is suggested that a. telephone call received on 
an investigative matter during a conference of agents on 
the case could be heard by all agents at the conference 
instead of having to be relayed by the person actually 
talking on the telephone. This would save agent time and 
would also make it possible for agents at the conference 
to make suggestions during the telephone conversation that 
would probably prevent a possible subsequent telephone call. 

It is; suggested that the FBI Laboratory may desire 
to consider use of this device in the Laboratory or in a 
Bureau Office to determine if it could be used to advantage 
when more than ; one person desires 'to< take ; part in a telephone 
conversation. 


Mr. advised that he’ would make available one 

of these units for examination ‘by the ’FBI Laboratory if 
desired. 


b6 

b7C 


2 



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Iff 


ortiONAi ' ro«M no. i t 


UNITED . STATES GO\P*NMENT 


>4k 

. Memorandum 



TO 


QM 



subject: 


DIRECTOR, FBI 


date: September 13, i960 


SAC, SAN FRANCISCO (66-2746) 


TELEPHONE FACILITIES 
SAN FRANCISCO DIVISION 







Administrative Division 



Confidencer Microphones 

Re SAC Letter 60-36, Section G, July 19, i960, 
Bulet August 9, i960, and San Francisco letter August 2, i960. 

4 

As suggested in referenced Bulet, the San 
Francisco Office contacted the Pacific; Telephone and 
Telegraph Company concerning the availability of Confidencer 
Microphones for use on Western Electric equipment in the 
following locations at Headquarters: the Information Desk, 
the Night Answering Position, and the Duplication Unit. 

After a review of referenced SAC Letter, it was felt that 
these three telephone instruments were definitely in 
locations where the Confidencer Microphone would be of 
great value in eliminating extraneous conversations and 
other noise during use. 


The Telephone Company advised that they are 
presently in the process of securing approval by the 
California Public Utilities Commission (PUC) of proposed 
rates for these microphones which are referred to by the 
company simply as ‘'Confidencers.'" The proposed ' rates 
are $1.30 per month for each Confidencer arid $12.00 per 
Confidencer for installations It is riot anticipated that 
the PUC decision will be rendered for at least 60 days and, 
therefore, the company cannot take orders for the Confidencer 
until after October 1, i960. 


UACB by that date, this office will order the 
three Confidencers for the three instruments cited above at 
a total installation cost of $36.00 and a total monthly 
charge of $3.90, subject to approval of those rates by the PUC. 


Bureau (Attn: Administrative Division) , • , 

X- Bureau (Attn: FBI Laboratory) ??/) _ [ — 

1 - San Francisco (66-2746) £Lrs. ' Cfc s 

/w v CLEB:pp . ,^ r RECORDED , 

J ' W ' 12 SEP aa 1960 

5B SEP 2 6 1960^'^-^ — — — ' 





r 


Mr. Tamm 


16, lMd 


K, L, Ml Utw 


klf b 7 C 

itsp; arnAtto bV wttitf 

O Ou- u rj '• , ,>I, I > - 

jtoBulet 4/1 VOoTi Miami oapttooedaoabovo* Jthaobeen 
aAcertaiaed that toe deriee reportedly Miami to be need to by-poaotoe 
«miny ratomeat la CAMA (Cuetomer Aoaiot Machine A cwou ntt ag) and AKA 
(Automatic Machine Account!*) aaeo ci nte d with DDD (Direct Diotance 
Dialing) will work wafer certain condition#, towoeor tl» talttag time will 
be limited from two oecoade to a laanimem of two miautee. The auceea* of 
this equipment will depeadupon the following faetorat 

(1) Tbeobortlag eei <rf the ringi* equipmem long enough to bare toe 
ringing relay la to central atfto drop out of toe circuit and yet abort 
e nou gh to proroot too ooo to Jour-ootoad eff-toe-hoofc mode co ndit ion 
to bo rotlootod book to too ttaamr to too CAMA or AKA equipment* The 
Wootora Klectric 414C cold cathode tube proridee too momentary off • 
the-hook 


(!) lb* length of tlmo it restore* too Cootral Office time**' 
equipment to oat too called otatftoo off too linn* la too BoU tootom 

enehangea tola time out equipment wittonryfiwm alow cceondc lathe 
aowor twitching equipment to twemiaatoe to 8t*-by-4tep CeafWl 
Office equipment* 

($) The loogto of time It rtopdroo too aoador at too Cootral office 

cootrolll* toe eecond inetrnmeni at the called etatlou to “timeout* 

aad put a permanent (trouble) *ign*l oa tlm oeeoad telephone liao. The 
auitoc of too ai*le cot of pUlaeo to clear too dial tone oa too oeeead 
tootruamto at too called otatloa oaa bo ropoatod maay ttxaooi boorovor 
tooro to ae adraatage la repeating tolo oporatton beyond too “tone out ' 
of toe called number. 


1 - Mr. ftoeea (Attentions Mr. Curran, £oom 7204) 
1 - 46*8140 (Technical Surveillance Equipment) 
t * 40*780 (Bracing Telephone Callo) 

1 * 40*781 (General Telephone Technical Data) 



'not recorded 

46 SEP 19 









• a 



JTSPj FRAUD BY WIRE 


I* Milton 


b6 

b7C 


It waa painted out la Bulet to Miami that apodal wiring mast axial 
to permit too operation M eel out in their letter dated a/10/60, Tbe time out* 
leafcsrea on toe tela ph oaea eoaaeetod to the apodal device maybe adjuated or 
cm partlyaedae that aataadedcoiimaaittotmstoy I* con d uc t -Ha condition 
may lw eauaedby a adtoettai of toe central office awitehiag or 

tt majr Imre been eroded bya cod cdar m wurldhgwitote the telephone company 
at the tar»iaattag central office. The operating telephone cowpaniei make every 
effort to prevent maHaactiona ot tola type through regular routtoe cleaning ami 
adjec t i ng awitehiag equipment aa wall tut through tba uee of Autom a tic toaffag 
equipment deafened to f arrat eat dff acta ami malfuacttoiia of fee jnrilebtog 
equipment. They cmitottf rmtod panoeml g ttto obligation to Inaure 
mtoaertoera at proper and aaeura comam nic a H a n fartltttc*. 'When they linden 
employee net meeting tbeee etomtorda tba employee la dtomiaacd immediately. 

ACTION: Kona, for information. 


* 



I 



NORTH ELECTRIC COMPANY 


GaMOft Oh»o 

TefophOAO HOwar^ $-2420 
C«h)« NORTHPHONE 

Electronetics Division \ 

May 3* 1961 \ 


Federal Bureau of Investigation 
9th and Pennsylvania Avenue , S. W. 
Washington, D. C. 

Attentions Mr. 

Room 

Dear Mr. Matter*. 


v 

dtva t fh) 


At the request of our Admiral 'Fritz Gleim, we are forwarding under 
separate cover our Industrial Catalog, -Components Handbook, miscellan- 
eous brochures and specific telephone info rmation witk pr ices, The' 
; eiectroiii6‘ Switching in i'orSk ti^WiS" H-rrew staie-of the art~SSa 7 we be- 
lieve Will be of considerable interest- to you* 

If you should have any questions regarding the above, please do not 
hesitate to contact Admiral Gleim or the undersigned* 


Verjrtruly yours, 
S^OBSH ELECTRIC COMPANY 


Ohio 


RPP/ef, 


Manage r-Component Products 

Otii 0 


/A 


Copy to* Admiral Fritz Gleim (Ret.) 

940 - 25th Street, N. W. 

Apt. 502 

Washington, D. C. £X. • 10$ 

FEieral 7-5 6?0 


REC -88 


MAY U-1361 


jO- 1 %) 


*t> MAY 15 196ft 


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?•?? (S*2 jM 9> 






80-781 


Todd Electric Company, Incorporated 
Department TE & M 
20 Harrison Avenue 
Yonkers, New York 

Gentlemen: 


September 11, 1963 


The Federal Bureau of Investigation is. interested 
in obtaining available technical information and specifi- 
cations pertaining to 

communication circuits^ 


Todd hybrid transformers for use in telephone 


H t. 


Since, this material might have possible uses in 
connection with official Investigations, it would be ap- 
preciated if you would afford confidential, treatment to 
this Inquiry. Please direct your reply for the. attention 
of the Federal Bureau of Investigation. laboratory. 


*T olson <*• 
Selmont , 
Mohr 
Casper 

Callahan- 
Conrd 4 =** 
\ DeLodch 


MAILED 20 

SEP 1 1 1863 


Very truly yours, 

V John Edgar Hoover 
\j Director / 



WEH:cf (4) 


NOT RECORDED 
• SEP 12l19S3 


NOTE: Bureau indices contain no references to Todd Electric Compan y. 

? 66 


Q 



4*312 (Rev. 1-J8-62) 



i 



Date of Mail 0 - ~ lo3> 


Has been removed and placed in the Special File Room of Records Branch. 


See File 66-2554-7530 for authority.; 


Subject 



Permanent 4 Serial Charge Out 



80-781 


December 14, 1962 


/C 


o 


J/:X( Lia,?.. 't S, o o 0^2- *<i 1 '[ As $V/ .Uj. 


Altec Lansing Corporation 
Anaheim, California 

Gentlemen : 


The ^Federal “Bureau of Investigation is interested 
in obtaining available technical Information and specifi- 
cations pertaining to your transistorised Altec repeaters and/or 
compressor amplifiers described in the December 1, 1962, issue of 
Telephony, fe addition, it 'will be appreciated if you 'will forward a 
copy of your latest Altec telephone products catalogue and price list. 


Since this material might have possible uses In 
connection with official investigations^ it would be ap- 
preciated if you would afford confidential treatment to 
this inquiry. Please direct your ; reply for the attention 
of the -Federal Bureau of Investigation Laboratory. 


T Olson _ 
Belmont 
' Mohr 

) Ctffper^ 

( Cotishan , 
" -Conrad ^ 
btLOQth , 
' Evans — * 

Boson +<—+ 
' $u Uivcfh >- 
rtdveL 


MAtLCD 27 

/) 

BEC ;j 4 m 

CCMM-F.BI 

IL i f , 0 


Very truly yours. 


NOTE: Bureau .indices {negative re security inf ormation on 
Altec Lansing Corporation. 4 <7 a ' 

/ / ; * Tio (rlkzcQrt 

C:c V 6 ) ^ a DEC 17 tito 






“MAIL ROOM \ 




4 


TELETYPE .UNIT 


OttlONAl FORM NO. 10 


MENT 


.'UNITED STATES GojJkN 

Memorandum 


X> v 


TO 


FROM 


DIRECTOR, FBI 

(ATTN: FBI LABORATORY) 

&>£>-57SX 

SAN FRANCISCO (4=62=8} 


: DllffiC 

:CLQZ 


date: 


9/12/63 


subject: retJSL DIVERTE B — 

t / Mar c om~C o rporatlon , 
Oakland, California 
INFORMATION CONCERNING 
(Technical Equipment) 






O 


Enclosed herewith are two (2) copies of a brochure 
published by /fMaT^c om-Corporatlony~302^0akland Avenu e . ^Oakland , 
California , describing a newly, developed Call Diverter, 
designed to relay telephone calls from one telephone to another. 


This material was received from the Intelligence 
Division, San Francisco Police Department on 9/6/63. 




The equipment is* of interest since it is readily 
adaptable by bookmakers for diverting telephone calls, and 
could be utilized in the same manner as the so-called "cheese*} 
box" now being used by bookmakers in this area. As yet, the ' 
San. Francisco Police Department has had no instances of the 
Call Diverter being so used, and the manufacturer had 
agreed to keep accurate 'records of purchasers of this equipment 
f or„.the San Francisco PD. 







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roled or-rhemo mcjsiigo offen i fails : to f>?ect the need .for irnmc*. ..'*'» 
s» tthw/er or dlscujsi.on. ;'' ' »«.,> 7 « > * 

* i •* 81 -■;■*' .-< ?■ • , • \-' ,■ ' ' • ' . i* ' v 

f^JT^cOtn c^lso hh <ootivarod by tne colbdivericr', F6i cxompio, . ,• ? 
rjitrg d plant manager In his home or on a. trip. Several alarms, f. , i. 
be accommodated, coch identifying its nature and la tfion. , *‘^ 

ls ol i0 Ovailable, to sfarf'W itop machinery,! ‘j 


The most important calls arc those demanding immediate personal contact. 
The unique transfer feature of the Call Di verier makes it the only instrument 
on the market to provide that kind of service. 

Will it work with various types of central office equipment and line 
facilities? Yes, Only in exceptional cases is any adjustment necessary, and 
then only of the simplest kind. 

The call diverter is similar to what other answering devices? None. Its a new 
departure. Actually it is a transfer unit which sends coifs on to any number 
the subscriber chooses, whether through infra- or inter-exchange systems. 

Are there other ways it can help, besides passing the subscribers calls on 
to him? Yes. If the subscriber wishes, it will pass his calls on to an associate 
during the subscriber's absence. The associate hears a transmitted tone on 
the call to tag it os a transferred call. 

Is more than one telephone line necessary for the use of a diverter? Yes. 
But, when the diverter is turned off, both lines revert to normal service. 
With the diverter on, an incoming call on cither line activates the device. s 

What does it cost? In comparison, it costs a little less than an answering 
recording device. 

What about incoming toll or long distance calls? The call diverter prevents 
termination of an incoming toll or long distance call until the diverted 
number has answered, 

What if the subscriber does not want to transfer all calls? Circuit options in 
the diverter furnish a means of screening cafjs. For this, however, one of 
the two connected lines must be unlisted. 

Does the caller know that the subscriber is not in his office? No. When the 
phone is answered, the person answering hears a different tone before the 
connection. This identifies the call to him as a transferred call; however, the 
caller hears only ringback until the connection has been established. 

What if an alarm is triggered while a call is in progress? The alarm code is 
superimposed upon the connected call. 

* » « < 
What about different dioling system*? The diverter may be ordered for 
seven, tenor twelve digit dialing. 

How does the call diverter work? If sees an incoming call, dials a number, 
connects and disconnects, and is supervised as is an ordinary telephone 
Call, It is not subject to timing limitations. 

Siie? Colors? Dialing? Measures 9" x 12" x 5’/.", Gray color is standard; 
telephone colors optional. 7, 10 and 12 digit dialing. 


A CAU TtANSfl* 

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CoUtf **A*' diofs Ookfond fefe phone 
446-4561. Diverter ft ON and ft »et lor 
Wotnvt Creek ’*0” $35-017$, Diverter 
diofs ovt on fine *‘C*\ Diverter terminates 
CO»l only w pon answer at Wolnyf Creek, 


«M0TI CONTROL ™5 
Coffer **A M dials 
diverter line M ft M * * 

plot cade, to itort or { 

stop machinery * 
connected to I 

control circvjf 
corresponding 
‘ to the code 

diofed. tC" 


12)4 



VERY SIMPLE TO OPERATE 


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Set THUM5 WKUIS ‘W’ to desire^ mW>er and eperotf -OK* twjfcli U * J>o»l2'»n, 

fllOT lamp *'C vym |*M, The dUy r b ready fa *«»>« WfiSl tUU 5 
a command to direct remote centre! — ready te *{yard ff ho mJ? , * 

Shovld the tvbscr.^er retwra and tfni.fcWt fa pfeqren ht may toft ret de by ftperoffosW*’ 
mmtm twins toward i« $ Wd?w *■$;' bf J 

Retvrmo^ the M 0Ff-QN 1 Tvy.tch to 'PfP w«| » fe<?Y# Mpi Ifc'Wfth IN If ft ft ( 

cept ^wifeh fo the fp»»nq fprfy ?*Jy. The Intercept «eopp| $*4 |«mp| qff pf >f{$ppf. * . I 




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’ . call diverter , : • ' 

* THE TELEPHONE WATCHDOG U 

. I 5 V 

* , * • * t t t 

t f i ' f! ^ 

k ; '3ill C 5xf ”**5 its °P tions and two telephone service ’lines U 

s.will extend service of your telephone subscription to include: - \\ 

• * ° AUTOMATIC CALL TRANSFER TO ANY NUMBER YOU CHOOSE. " !•' ’ y *; 

& TRANSMITTING OF ALARMS TO ANY NUMBER YOU CHOOSE. ■' , j' 

V;, ‘ , ° mEPHONB F /.NrWHBRE? A1, WRCUITS *“> MA( ™ Y *«* ANY ' ' ;.{j 

« sraaas s“*l 

' on its nLw e will activate the device and the number you have set ' 
connected when < “ al ® d and '' ; ' V'l 

!' a SCREENING OF CALLS TO BE TRANSFERRED. , y ! 

- i 2 th ?' CALL DIVERTER provide a means of screening ■ ;i,« 

is non!li«e5 ran |S r ^? 1 V,h k 0n on ? of 8he 2 «»9«oted telephone lines - i 
choosing. ' Th , alls transferred are then limited to your ;-'«f 

' , * SYSTEM < ? RDIHa ~ CAI,L DIVERTER 13 A, DIRECT CONVERSATION . „ 

1 . ’ *’ i t 

i * # . . 

a P Sd eS ^ a » n6 l„ d ^5?f^ in f Recording equipment result in delays' . ^ v 

such recordina'dev?r^ d i^? i \^?R J c 5 Uer . reaching a number using 
, no purpose haf hfl« ces J e bllled Tor the connection even though v \ t‘ 

Mt wa f ™ eni r riS ateV r- v «ry Often important businesf 
an immediate nfed. 11 b k> and 3 recorded message will not meet 

' ‘ t , ■*'> J* 

O ELIMINATING THIRD PARTY HANDLING OF YOUR CALLS. * t 

i , \ t i 

ha«l?^i ng r a numb ® 1 ' where you can be reached results in personal '/ • 

indicatiort^tha? r vA« S ^” eSS * The CALL DIVERTER givesthe callerno T'i 

he dialed? H Y Wer ® reached at a number other than the number , 

* M -1 

ge precedes P the°connection a of C *the .SLSSWy^ ^hf^ ' 

call as one transferred rather than a call -placed direct fl L? 6 

P^o?idernotice C t^Th date l he bransferred cails. This feature 

the transferred calls\hat t ?he h effi n ? mb ? r is . bein 6 used to accommodate . * V 

who 'roQMosted^poraission.^ohmak^transfe^ofhhis^calls^ to^that^number.^ < ^ 

♦ REWAL WHEN PRESELECTED • NUMBER; RECEIVING ALARMS IS BUSY.' ’ ' 

' ' f * ■ U.f 5. ■ . ' ' , » '• i %' 


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' <<i .1 




The Telephone Watchdog 
Page 2 ■ ^ • 


V-' *<</“ * 


If the number dialed by the CALL DIVERTER is busy, the DIVERTER will «, , , j 

continue to release and redial the number until the busy condition , t , J, ' ; 

" n ° longer exists - or until the alarm is answered or reset. ’ 

, V 

, , ' , b * ^ | 

Hero is a machine for the doctor or attorney who is away and wishes * • 

* 1 to direct his client to an associate. It eliminates the necessity ‘ 1 1 

of notifying each client of his absence and transmits a tone so ' , ' -5 

■ , that the acting associate may answer calls accordingly. 1 1 ' 

...For the man on 24 hour call, the CALL DIVERTER* means more freedom V ‘ ■ 1 * 
, > of movement without notification to some central point of his every , ,5 
.move,. , . - , , , * 

1 * * * * ’ t , ( , * y 

DIVERTER [s transfer service will find thousands of appllca ti 01 

V 0 DELIVERY DATE, TO THE TELEPHONE COMPANY - 90 to 120 DAYS, " ’ M - J 

; FROM DATE OF ORDER. t * ,) ;»V 

\ (Less Alarms and Controls) ■ ■ , ' I.,' ' 1 * 

’ 1 * * m , , , ^ s *, 

.'The CALL DIVERTER characterizes a selective and almost infinite' ' \y"; 

,1 extension to your present telephone service - but this is only one "'*! 

j ; its truly amazing functions. The CALL DIVERTER will accommodate' ) i>; 

; 'from 1 -to several alarms., With a single conductor connected to " ■■‘ir, ^ 

receive ground from each alarm when triggered, the CALL DIVERTER will , ■' 

y° u ^e Preselected number and connect a coded tone, identi- ''1 

fying' the nature of the alarm or alarms and their location. ' - T,,' 

■ • , , , , / ; l( 4jj 

, ' If an alarm, or alarms are triggered while, a call is in progress' . 

• through, the transfer circuits, the alarm tone- code will be superimposec < , 

• on the connected call. ' . / 

f - i , , 1 ' ' 1 , t s k f 5 

* a _ f • * •*;} 

f Only one line is needed to dial the selected number and transmit 'Vj 

< identification when an alarm activates the DIVERTER, the second line ‘j ■ Vi; 

, i is connected for standard telephone service during the alarm period., ( ,A 


If the number dialed by the CALL DIVERTER is busy -.it will continue 
to redial until- the busy no longer exists and until an answer has ' 
been received. After answer the dialing is discontinued but the 
tone remains on the DIVERTER lines until the alarm has been reset; 

The DIVERTER will continue its function; of call transferring with, no* 1 
interference from the low level' audio alarm. One of the numbeVs • .... 
connected to the CALL DIVERTER may be dialed at any time to ascertain, 
if an alarm has been reset. ■ , •• . • • 


1 ■>. 
a r x 


• 't i 


MARCOM CORPORATION 
,302 Oakland Avepue 
Oakland 11, California 
, Telephone: 693-2360 

Area Code : 415 ' 


:■** ^ *" 1 


,ir 




SAC, New Tijjgfc \\ 

Director, ^BI (80-781) —/jT 


NEW YORK TELEPHONE COMPANY 
DEDICATED OUTSIDE PLANT 


January 6, 1964 


1 - Mr. Belmont 


Reurletl2/20/63 requesting Laboratory representatives to 
attend a conference with New York Telephone Company sources 
regarding the dedicated plant plan. 


Laboratory Supervisors C. K. Corbett and l h s 

I I will be available to attend this conference and plan to arrive at the J 
New York Office on the morning of 1/10/64. 1 ^ 


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NOTE: Cover memo B. X. .Milieu to Mr, Conrad dated 1/6/64 re sam? 
subject, WjEHrbwd. 











'to Ison 
Belmont ^ 
Mohr 
Casper 
'CqUohdft 3 
Conrad ^ 
-DeLoach , 
drafts 

Cal* _• 





tSulliVcm 

tavei I 

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Holmes ***«,„**,«.*, 
Candy 


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MAIL ROOmQ TELETYPE UNIT CD 


* MAILED Z7, 

JAN -7 1964 , 

COMM-FBl 


»lc-09E?H0MJ 

^ e 







OPTIONAL. FO*M NO, 10 8010-100 

MAY 1902 COITION 
©$A OEM. *£«. NO. *7 

UNITED STATES RNMENT 

Memorandum 




TO 


FROM 


subject: 


DIRECTOR, FBI date* 22/26/63 

: FBI LABORATORY, RADIO ELECTRONICS SECTION) 

5W YORK 



W YORK TELEPHONE COMPANY 
’CATED OUTSIDE PLANT, 



i. 

<0 

o 

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0 

VC 





V 


The American Telephone and. Telegraph Company, 
operators of the New York Bell System, lave placed into 
operation in certain areas covered by the New York Office 
the dedicated plant plan. The adoption of the dedicated 
plant plan and the use. of this technique throughout the 
Bell System will, have a far-reaching impact upon 
technical procedures presently utilized in the sound 1531*^ 

work of the New York Office. 

In order to better understand the system, its 
purposes and design, a meeting with highly placed sources 
within the New York Telephone Company has been set with 
senior sound personnel of the New York Office for 1/10/64. J 
This meeting was initiated by OUr sources within the 1 

telephone company; to help the FBI in maintaining standards 
of sound work in both technical, and security aspects as 
have been previously established. 

These people are most cooperative and anxious ; . ^ 

in their efforts to help Us in every aspect. It is felt, / fr* 
by the New York Office, that the dedicated outside plant / 
system will effect sound work throughout the Bureau and Tr 
.that the meeting is important enough to warrant representation 
by the Bureau Laboratory. 

Supervisor CHARLES CORBETT has previously been 
Introduced to these high officials of the New York Telephone 
System and is most conversant with the New York Office 
sound operation. If Supervisor CORBETT is available to 
attend the January tnth meeting, the New York Office would 
be most appreciative . RQ> fa 

ake the time and place of meeting 
ork Office would appreciate confirmation 
any others arrival. New York, to attend; 


In; order ,to 
more definite, the 
of Supervisor CORE 
/above. 



redu 

(1-FBI Lab, Radio Electronics 
1-New York , 


RES: Dad 

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ornOMM k*m no. io 


m. 

iRNMI 

Memorandum 


UNITED STATES GOVERNMENT 


TO 


.Mr;, Conrax 


date: ..January 6, 1964 


Toisoa 
Belrooot * 
Mohr - 
Cospor ^ 
^ Callahan , 

I / ^^TDeLoachn 
W Evan* _ 

Gaie__ 

Bo sen .Jl 




Sullivan , 
Tavel — 
Trotter . 
Tele. Boom j 
Holm 


k 


(me. 



FROM :- r. l. 

subject: NEW YORK TELEPHONE COMPANY 

EE DICATED OUTSIDE. PLANT / 

®(Lo n 

Re New York letter l?/26/63 requesting Laboratory representatives 
;to sit in on a conference between highly placed sources within the jNew York 
Telephone Company and senior sound personnel of the New York Office to 
discuss. the ’’dedicated plant plan" being instituted In some areas by this 
company. 


The- ’^dedicated plant plan’Vref erred to is . ajplan of. initially 
installing cable, wiring and other outside plant iacilities committed , to a 
definite. use of service.and without the flexibility characteristic of telephone 
company.practices in the past. 

m 

* ,i As a part of the Laboratory; *s supervisor y responsibilities in t 

keeping abreast of developments in this field and. because of the impact this 
development.could have on our. technical efforts, it is felt that the Laboratory/ 
should send two. representatives to, attend this conference in New York on / 
1.1/10/64; \/ 

RECOMMENDATION: 


That Bureau a pprove having Laboratory Supervisors C. K. Corbett 

and l | t . attend the conference with telephone company sources/ 

in New York City onl/10/ 64. If approved, a letter, k attached, advising "Jr 

New York of this should be;sent. 




b6 

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OtYlONM'FOftM wo. ip 


OfTIONM'FOftM wo. ip 

UNITED STATES GOVE]^EfE> 

Memorandum 


I 


ToJ*oot « 
Bthnooi 

Mohr 

Casper * 
Callahan 


date: January 14, 1964 


Callahan 

/^TyTeLooch 
v/ C Evans 


from :• R. L. 




Evans 

■s«* — p 

loosen 
-J^Iivon —? 

iTovel V 

Trotter «... 
Tsk« Room 
Holtnes •_ 
Gandy __ 



V** 


subject: NEW YORK TELEPHONE COMPANY /) 

DEDICATED OUTSIDE PLANT 

°tc>N FjJenceir Micro phone* pp f / 

Sources in the New York Telephone Company arrangedto discuss a j/ 
new telephone company cable distribution, system and procedure known as the > yrCu* 
^dedicated cable plant plan” with representatives of. this Bureau. On January 7, V 
1964, the Director approved a Laboratory renresentative’S attendance at this 

conference. On, January 10, 1964, MessrsJ , k Chief Staff b f_ 

EngineerJ "( Assistant Staff Engineer ! I Plant b7c 

Engineer: <and l O perations and Research Engineer, NewYork. 

Telephone .Company, discussed the new cable distribution plan with S upervisor 
C. K. Corbett of the Laboratory and New York Sound- Trained Agents) 

IJohn G. Fleming / I 

and Char lesiVan Derveer in the offices of the New York Telephone company, 

New York City. Assistant Agent in Charge Winterrowd attended the preliminary 
nontechnical phases of this conference. Information discussed usually requires 
three weeks for, the. telephone company staff, engineers to. assimilate. The technical 
information gained. will be most valuable in future handling of technical surveillances. 
A manual 'on 1 this procedure is being retained.in the Laboratory and pertinent 
information will be incorporated in our sound training* and retraining programs. 

This conference was extremely valuable in assisting the -Laboratory 
in its supervisory responsibilities in keeping abreast eft developments in this 
field. Section personnel have been furnished technical details, of the conference. / 

ACTION: 

’ Technical data* obtained will be used in* sound*, training and 
retraining programs. A.summary of the technical details is attached for 


record purposes* 
RLM/CKCrbwd^^ 

<9) ‘ „A# 

1- Mr. 

Enc. ^ 

6 4 FEB 171384 



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KOPJES 12 1904 


i 








TECHNICAL DETAILS' 

NEW YORK TELEPHONE COMPANY 
DEDICATED OUTSIDE PLANT 


The dedicated; outside plant plan> at teis time> is an alternative 
method, of designing and administering the customer ^ .portion of ’ the Bell 
System outsideplant network. The objective of the design of an. exchange 
, cable network is : to provide facilities * to , meet demand, , with’ a’ minimum of 
capital investment and future rearrangement. and;change cost.; The:pian 
.recommends. the permanent assignment (dedication) of a cable; pair from* 
the centraTcfficejmain frame to a. residential' or :hon-key, business (single 
line business telephone service) as demands develop,, regardless, of the 
class of service. Once dedicate d, ;the pair will remain permanently 
assigned to :the location whether .working or idle. 

While ithis/plahhas been captioned New York Telephone Company 
Dedicated ; Outside Plant, it will be adopted by the entir e Bell sy ste m . There 
are sometof ,the.operatii^;cbmpanies presently;using:this system and it is 
understoodthat all . of, the companies wili f ollow the practice as soon as it 
can be ‘inaugura.ted in their respective companies. 

The.dedicated outside, plant program^will not change any of the 
existing.^spare pair concept” of* the cable plants now in service except 
where cable - changes are .being ; msuie ;to .relieve; overloaded .cable facilities. 

The direct result of the adoption- of this plan wiU be the virtual 
elimination .at, line; and! station transfers,/ essentially : all • cable pair trans - 
iers, and, central office, drop .wire or ter minaljumper transfers associated 
withsuch. activities. ,&rvice order; assignments swill besimplified. .Man- 
made .troubles and 1 service order : completion intervals will be reduced. I/>op 
transmission will be improved. 

This. plan provides; for: a new* concept. in station ( disconnections 
wheh'service te: discontinued. All disconnections will be.made at'.the 
main frame in, the central oHice and the instrument left in the premises for 
a predetermined time, even though' the , residence or apartment is vacant. 


%o- 7?t-n 

gnceoso® 




TECHNICAL DETAILS 

NEW YORK TELEPHONE COMPANY 

DEDICATED OUTSIDE PLANT 


When new service is ordered for this address (new subscriber using same 
existing instrument), the only installation work required will-be in the central 
office. The company is considering mailing the ’^number card" to the sub- 
scriber along with .instructions for placing this card on the instrument* 

This new concept for cable distribution calls for the gradual 
substitution of control points for the existing; cross -connecting boxes. 

.Access points will be substituted for the conventional terminal boxes. 

Pair assignments at these -two, points will be made only under' an engineering 
work order and will, therefore, not.be frequented by the installer and/or 
repairman craft. In the areas where aerial cable (cable suspended. on 
poles) is installed, the company intends to continue using the "ready access” 
type terminal, in which. case^the drop wire will be connected to the cable 
pair through binding pofSjfes. ‘The control and access points will be installed 
.on the walls of buildings, in basements, on poles or on cable strands. 

The "dedicated cable pair" will be a non-multipling pair of wires; 
however, these wires are available at the access and control points. In 
addition to the "dedicated pairs" each cable -will’ have a number of ; unassigned 
pairs (spare) to handle second line requirements. Unlikethe dedicated 
pairs, these pairs will appear in a number of different locations and are 
available for. assignment at any location at which ithey appear. When a 
spare pair is assigned, the subscriber is ‘•bridged" on to the. spare pair without 
effecting changes to the reappearances. of the spare pair of wires.. 

With this new distribution system, the company will abandon 
the horizontal floor distribution plan in apartment developments and 
; institute a vertical riser distribution system. With this new system, the 
company wilt install* a cable from ;the basement to the top floor which cable 
will loop through each apartment in j the riser at- a. convenient location, in the 
apartment. One-pair .of, wires f romthis cable will terminate in each 
a p artment with the assigned' wires in r the cable being cut beyond this point. 
There will be unassigned pairs (spares); appearing in each riser which pairs 
are available for assignment in each apartment in which the cable appears. 


- 2 - 


TECHNICAL DETAILS 

NEW YORK TELEPHONE COMPANY 

DEDICATED OUTSIDE PLANT 


All of the Bell system telephone companies are initiating a 
program of pre-wiring "all new apartment construction” with a twelve- 
pair cable that loops through every room in each apartment. This cable 
will be placed before the concrete floor is poured and will be imbedded ia 
the floor without conduit protection. The, cable will appear in a con- 
venience outlet along with, a duplex power outlet in each room of the 
apartment. This cable will originate, pass through all rooms in the 
apartment and terminate at the same point in the apartment as the riser 
cable appears. This arrangement will permit installation of a telephone 
in any room in the apartment with a minimum of installation time and 
equipment. 

When an installer receives an order to connect a new telephone 
set to the ’’multiple-type cable plant, ” he is told to connect his wires to 
certain binding posts. His order may require him to visit as many as 
twelve different locations before he can complete the order. Under the 
new system, he will visit one location where he will connect the telephone 
equipment to a particular pair of wires identified only by color. He will 
make his connections to these wires by means, of insulated press iit type 
of connectors known as ”B” connector. From this point on, .the cable 
pair becomes. dedicated.to that address. If additional service is required, 
the installer is assigned wires with a different .color. This second pair 
of wires is not dedicated to.this address and may, be used, at another address 
after service is discontinued at jthe first used, address. 


When a new program, such as this, is inaugurated, ; the question 
^that always arises is "how will it affect our operations, ” With the elimination 
of the multiple appearances, we will have to maintain close ties with the 
engineering staffs of operating companies to determine the color assignments 
and access points for the wires serving our subjects, Once the TEjSUR 
coverage is established, Ithe chances of discovery are, minimized with this 
new system as ihe connections will.be made with sealed connectorsnt points 
visited only by cable craftsmen who have instructions to work; on certain 
wirenolor combinations and shouldnot, therefore, attempt to select 
communication; lines at random. 


TECHNICAL details 

NEW YORK TELEPHONE COMPANY 

DEDICATED OUTSIDE PLANT 


i Under most conditions, our connections tothe subjects line 

[will be at remote points and we should have adequate spare.pairs of ydres 
jfor leased line purposes* Our microphone cover age in the new apartments 
/should be simplified as there will be spare pairs of wires in each room 
/available for- use for MISUR egress. 

It should be pointed out that the dedicated outside, plant plan is 
a long-range program applying only to new construction and certain changes 
, in existing plant systems. According to company officials, it will be at 
least two decades before the full impact of this program will be realized. 
*We wiU, whenever possible, take full advantage of these facilities in 
establishing MISUR and TESUR coverage. 

The details, of this program will be incorporated in our sound 
training and retraining programs. 


TO 


FROM 


SUBJE 1 


O^TlONAi, FORM NO. »0 
MAY 994)' COITION 
OSA 0«N, *£0. NO. *? 


I 


UNITED STATES GO^INMENT 

Memorandum 


i 


Mr. Conrad 


R. L. Mille 



Toisoa — 

Belmont jgm 

Mohr _ 
Casper 
CaHahdR . 
Conra4 *«, 
Pe Loach ^ 
Evans 
Gals , 


date: September 21 , 1964 ^se» 



0^ 


o 


HONE - TYPES. 



Silvan — 
Tavel 
Trotter 
Tele. Boom . 
Holmes . 
Gandy - - 




There follows the technical details,* of an automatic 
telephone dialing system 'demonstrated by th e^tla n tic. Research 
Corporation at :the receniuTMIL~E-CO N-8 s ho w at the Shoreham 
Hotel. TfiliTtechnical discussion is being submitted for record 
purposes only. t) . 

It was observed at the recent MIL-E-CON-8 show at 
the Shoreham Hotel that Atlantic Research Corporation was 
demonstrating a device for automatically dialing telephone 
numbers. This device has been given Patent Number 3,125,643 
and according to. the manufacturer,, affords the subscriber 
instant and accurate dialing for any number he programs into 
the unit. In addition to the instant and accurate dialing, 
the unit features a "group ed-logic M modular design which 
accomodates future dialing modes which tend to obsolete other 
devices. Parallel dialing of the same number over multisystems 
(SCAN, AUTOVON, WATS etc.), single control initiation for 
multiple number conference calling and intermixing of tone and 
rotary dialing within the same number are applications of this 
unit. The Automatic Telephone Dialing System (ATD) is a 
repertory dialing system which will dial a complete number by .» 
momentary operation of one button. In control centers, it J 
can replace costly private wires by using the standard switching 
networks. The Unit will also work with multifrequency or J 

touch tone dialing modes. Manufacturer claims that the 
dialing memory is infinitely expandable, the limit being the 
loading limit of the number of address buttons at each remote 
panel. It should be pointed out that the unit requires one 
separate button for each number to be dialed from a single 
telephone instrument. It is' conceivable that several hundred 
buttons would have to be attached to the telephone instrument 

care of the maximum number stored in the. 

rec . 4 ^Z2/- 


in order to take 
memory device. 


1 

i 

1 

i 

l 

l 


Mr. 

Mr. 

Mr. 

Mr. 

Mr. 

Mr. 


Conrad 

Millen 

Baker 

Matter 

Miller 


Mr. 

Mr. 


'%h 

K* * 

Stevens 

fisher 


a. 


SEP 23 1964 


/? 


Corbett - Mr. 


80-781 
CKC : ev„ 


69 $EP 2 $ 19 W 


CONTINUED - OVER 



b6 

blC 





Memo to Mr. Conrad from R. L. Millen 
Re: TELEPHONE - TYPES 

Bureau file 80-781 


The unit employs central logic, memory, and power 
supply which are packaged in a 1 standard card file enclosure 
for ease of routine maintenance. The designer has included 
fail safe interlocks to prevent the operation of any remote 
selector while the logic is in the process -of dialing a 
selected number. If a selected address is being re-programed, 
the logic will immediately return to the idle condition 
upon release of the selected button. If the address 
requirement changes before completion of the initial address 
selected, a reset button is provided which will return the 
logic to the idle condition ,so that the desired address 
may then be immediately dialed. Normally this reset button 
can operate only when its particular selector panel is 
using the dialer. However, a priority strap may be 
connected in one or more selected panels which will allow 
the user to cease control of the ATD dialing system. 

While this system ..offers many features desirable 
for systems of this type, it is not felt fthat it has 
application to the Bureau*s work because of the size of the 
memory cabinet, the requirement for a separateline into 
each instrument for each number in the repertoire > , 
memory and the fact that the telephone company has a much 
better system in their card dialer. The telephone • company s 
card dialer is much $ore flexible and requires less floor 
space than that of the Atlantic Research Corporation 
unit. 

This is being submitted 1 v f or record purposes 

only. 

ACTION: None. For information. 


- 2 


3 0-4a 

FEDERAL BUREAU OF.INVEStAtION 
• ^WASHINGTON, D. C. 20535 ▼ 

\DATE; 


VTO; 


5-21-65 

SAC, San Juan* 
ATTNi SA Perritte*. 


.Re: 


Technical Equipment 


. Invoice of Contents .. 


r 


m Crypt^Trans* 


victors, 1 K ohm, i#« 


*o 

/S ^ ; J 

i £ 1 / 

1 1 / 

"Special Instructions: , 

Mail RooST-Sfeg ai sMy ment date and r^istry number* 

Shipping Room: Show shipment date; bill of lading number; 
..initial invoice; return to Section checked in block^after 
initialing in block, invoice to be placed in administrative file. 



ICS 


|P&'C 

'qlfps 


7 118557 & 


FBI File No. 

80-781 

Reurteltype 5-21-55 


/^Via^ Registered. Air Mall, Special Delivery/ 

nJ ti iiiA’i id 3 &03 


?•$€ (ReV_iO/5*64) 
~ r < 

i 



4 

1 - Mr. Newman 
1 - Mr. Fisher 


80-781 


October 27, 1964 


Special Agent in Charge f ^tte (66-47) 

Re: BELL SYSTEM PRACTICES 

ABC OF, THE TELEPHONE 


1 

Dear Sir: 



The following concerns the technical equipment of your office: 

Beurlet 10/14/64 stating that your office has mix 
volumes of a manual entitled "Bell System Practices" and two 
volumes of a, publication entitled "ABC of the Telephone," 
Belet requested that the Bureau advise if the material is 
current and whether the manuals should: be retained. 


The publication "ABC of the Telephone" is current 
and should be retained by your office. The manuals entitled 
"Bell System Practices" contain reference material. However, 
if these manuals are no longer needed by your office, you are 
authorized to destroy same. In the event you destroy these 
manuals, they should be treated in the same manner as confidential 
trash,. 


Material included on your Inventory will require 
appropriate inventory change when destroyed. 



Tols<>n 

Mohr 
Deloach 
Caspef 
Ca lkthtfn 

Everts 

ftdsen 

tavej 
Traiter 
TeU. ftoom' 
Holmes 
Goody 


Very truly yours, 



John tdmr Hoover 
Director 


r 


• OPTIONAL FORM NO. 10 

• MAY fX>«TlOW 

9O«M0fl-0r 

tm*' ’ CSA GEN'. RfcG . NO. Z7 

UNITED STATES G^pNMENT 

Memorandum. 

to : 

/ / 

JDixector , FBI 

from : j / 

SAC, Butte (66-47) 

subject: 

BELL SYSTEM PRACTICES 
ABC OF THE TELEPHONE 


date: 10/14/64 


By SAC letter #337 captioned "Experience for Quali- 
fied Sound Men" dated 8/13/43 this office: was furnished with 
six volumes of a manual entitled "Bell System Practices." 


By No Number SAC letter #53-B dated 8/11/53 captioned 
"Reference Material - Technical Surveillance," this office was 
furnished with one copy each of Volumes 1 and 2 of a publica- 
tion entitled "ABC of the. Telephone." 

Due to the age of these two references, the Bureau 
is. requested to advise If the material is current, and whether 
the manuals should be retained. 


MwBureau 

^lr-Butte 


(Reg.) 


\ -1'- - .Lx 


RWEsiap 

(3) 

4- ~ 

fa p ~F r 




I ! 





July 8, 1996 


ToIsoa «p, 
Oetotfch' 
MOhf w 

WlCk MMV> 

Casper iph 
C aHahOA 
Conrad M 

felt 

' Gate 
ftasen — , 
Sullivan » 
Tavel w 
Trotter 


Alrtel 


1-Mr. Mohr 
1-Mr . Conrad 
1-Mr. Baker 
1-Mr. Miller’ 


'It 


FROM; 


SAC , San Francisco 
Director, ^£BI (80-781) 


i0 


TELEPHONE CALL DIVERTER UNIT 
RICHARD/UR08S HAROOM CORPORATION 
4244JUBAB1AXL 
OA KLAND .CALIFORNIA 

The Bureau is in receipt of the following Western 
Union telegram dated July 7* 1966: 

**J Edgar Hoover, Director of Federal Bureau of 
Investigation, Department of Justice, Washington, D. C. 
Respectfully invite representatives your Bureau to 
this office re demonstration of unique telephone 
call diverter unit# Evening or weekend appointment 
anytime at his oonvenlence. 

"Richard Cross Marcos Corporation, 4244 Broadway, 
Oakland, Calif .** 

Bureau Indices contain no reo ord of Richard, Cross 
Haroom: Corporation. One | \ is referred to in your 

file number 29-1995. If review of your indices and files u 
discloses no Information which would preclude contact with b6 

Richard Cross Haroom Corporation, it is desired that you ^ -r tb7 
acknowledge telegram and have technically trained Special Agent - 
determine nature of the telephone call diverter unit. 

X~ ' This matter should be handled expeditiously and 

reply directed to the attention of the FBI Laboratory* 8UTEL 
in event contact ^fepfiCEHrd Cross Haroom. Corporation not 
reoosmended. [ I 

\ JUL 8 1966 1, 

NOTE: 1 ^,.601 I 

: I San Francisco, California, 

“appears in Bufiles 105— 34074-47— 119 and 29— 34356. \ y 

: r* $ A““ .. 




ssm 181966 




MAIL ROOM CD rfti typstonitCZI 



mm, 
s. « 


oo 

WEST! 


1966 

WHO* 


^ C 4 >*y* c t ^ ^ *'** 

BIA011 808P EDT J9 i 7 66 0A21 8 


«/ > - 


0 JDB620 NL 


OAKLAND CALIF 7 


W Mr, ? - • 

*y ( j j£r. r 

, ■' ait, ( 

■q -Ifer 1 Mr - r 

; £ ;. 

^ ' Mr. j' t- 

Mr. ^ 
i lele. Hi 
! MiM Ji 



J EDGAR HOOVER, DIRIFEDERAL BUR INVESTIGATION 
BEPT OF JUSTJCEIMSHDC ¥f( , -yj , 

RESPECTFULLY INVITE REPRESENTATIVES YOUR BUREAU TO THIS OFFICE 
RE DEMONSTRATION OF UNIQUE TELEPHONE CALL DIVERTER UNIT* EVENING 
OR- WEEKEND APPOINTMENT ANYTIME AT HIS CONVENIENCE * 

RICHARD CROSS MARCOM CORP 4244 BROADWAY OAKLAND CALIF* JtJL 

fr^~ . „ *___ 

to ■ IM EaoACij for the mam I , \ . 


/ 

4-22 <H©v^' 1-22*00) 

f , Federal Bureau of Investigation 
/ mJ> ' ' Records BraM 


19 — 


I Name Searching Unit - Boom 6527 
(Service Unit - Room 6524 
IjFjxfward to File Review 

Attention 

i Return to — 


/ Roo 


Supervisor /Room Ext 


£ 7/0 


Ty pe of R eferences Requested: 

| 1 Regular Request (Analytical Search) 

| } aU References (Subversive & Nonsubversive) 

i ^ Subversive References Only 

| -) Nonsubversive References Only 

t JMain References Only 


Ty pe of Search Requested: 

{ ] Restricted to Locality of r 

1 1 Exact Name Onl y (On the Nose) 

1 J Buildup i__ — J Variations 




Subject 
Birthdate & Place 


Address 


Localities 

R# 

Prod. 




FILE NUMBER 


SERIAL 




Type of Search Requested: 

B Restricted to Locality of 

Exact Name Onl y (On the Nose) 

{ i Buildup — J Variations 



*4 


5 B ? 

0U1J7 

WESTERN 




»'!*) ,~a 

Mr, TaveL, 

Mr, 4 l t ,A:t 
Ti'Je. Roa m - . , 

M *i 

Mis# Gar.d v _ 


BIAOU SOS P EDT JUL 7 0$ 0A218 

« 4 

0 .JDBS20 MI* PD JD OAKLAND CALIF 7 

, < 4 

J EDGAR HOOVER 7 DIRIFEDERAL BUR INVESTIGATION 

DEPT OF JUSTICEIUASHDC , 

* * 

RESPECTFULLY INVITE REPRESENTATIVES YOUR BUREAU TO THIS OFFICE 

, i * ■* * '* 5 * 

RE DENONSTRATI ON OF UNIOUE TELEPHONE CALL DIVERTER UNIT# EVENING 

< p 4 J 4 ‘ 4 4 

OR WEEKEND APPOINTMENT ANYTIME AT HIS CONVENIENCE 



RICHARD CROSS NARCOM CORP kWl 

JtJ * 


ORIG: MR DELOACH FOR DIRECTOR \M A* 


DROADUA Y 


OAKLAND CALIF* 
f v 




fc'f 


rJ 

U- 


r 


OPTIONAL FORM NO, 10 
^80J<M04 


Cj UNITED STATES GC^RNMENT 

Memorandum 


TO 


.FROM 


SUBJEl 



DIRECTOR, FBI (80-781) 






AC, SAN FRANCISCO (66-3375)/ 


TELEPHONE CALL DIVERTER UNIT 
RICHARD CROSS MARCOM CORPORATION 
4244 BROADWAY 
OAKLAND, CALIFORNIA 

& d tsFijzcvce />!' 

Re Bureau airtel'j 7/8/66. 

< — 



Corporation, 4244 Broadv/Sy, Oakland, California, was con- 

-rgcri^xirFe f 
diverter unit. 


[ 


^advised that this Unit was developed 


approximately three years agd and "that it has been accepted 
by and is a part of the official tariff of the independent, 
telephone companies in thirty-nine states. 



C. t 


HeShdvised that this Unit has not as yet been 
accepted- by any member of the Bell Telephone System, 
however,,- the' negotiations are such in California that the 
acceptance of an official tariff by the California Public 
Utilities Commission will be. made with^i the jysar 


b7C 



[described the Unit as an electi 
device thatfjis attached to two telephone lines or to two 
telephones Whereby a telephone call that is received on 
one telephone is automatically transferred to a pre-selected ^ 1 
number and sent out on the second telephone li ne . ~ / 

He further advised that this Unit has great value 
as a burglar alarm system in that it can be plujf e$F§.n5 *966 
during night hours to a telephone line and that when any 
alarm circuit is broken that is connected to the oeVice, ~ 
the device will dial a pre-selected phone number and 



/ / CC 


(AT 





L 






SF 66-3375 
WHW:kec 


sound an alarm and in the event the phone is busy, 
will continue calling until the circuit is completed. 


| | advised that the unit is not supposed to 

be sold except for the connection to private telephone 
.lines and that dn those instances , where it is furnished 
by telephone company as a part of their tariff, a monthly 
charge is made :by the particular phone company . 

There is being included brochures which adequately 
describe and picture the unit together with price 
lists and related information. 


. •» 


b6 

b7C 


2 


$- 4 q <R,v. 

FEDERAL BUREAU OF INVEST*<®nON 
WASHINGTON, D. C. 20535 


DATE: 

TO; 


2/14/77 

SAC. BOSTON 

ATTEN: S.A. MXKB STUART 


TECH E3UIO 



* Invoice of Contents , 


1 ©a. & 


I FEB 14 W 

Tf #Sl ifc 

I gWCliJMWiMUlS U 1 ' ■■»■■' ■■■■II I J I m 



Q Crypt .*Trans, 
Docvrtlent 
^P&C 

* Radio Engineering 
LRPS 


Specie! Instructions: 

Mail Room: Show shipment date and registry number. 

Shipping Room: Show shipment date; bill of lading number;^* 
initial invoice; return to Section checked in block; after/^ 
initialing in block, invoice to be placed in administrative file. 


FBI file No, 


80-731 




.«tr 




7-66 (Rev. 6-5-75) 



SAC, Boston 

.Attns Mike Stuart 



2 - Admin Services Div 

<1 - Prcmnt, Rm 6823 JEH) 
<1 - Invtry, Rm 6132 JEH) 

1 - Lab Invtry Mgt. Rw 1B239 
1 - Sect Invtry Mgt 


2/3/77 


Director, FBI (80-781) 



TECHNICAL EQUIPMENT 


O r 

4* 


cl-"-* f e /-- 1 


7?) Ic y 4 


C3 Equipment listed below>has'been received Aft*»r • , 

will be returned to your office. ^ After repairs have be «n “ade it 

■D Equipment listed.below has been repaired and is being returned to your office. 
XXI Equipment listed below is being shinned to vo.,r 2 £^ 77 

Q pn wm l U68t ^ or . ® < t u >P®ent- 1 i sted below has been placed on record and 
Q will be centered Q will be ordered when funds .are avaUable 

□ ' 

diverter lystmT'™ Venerator nodel 84 tc S/tt 400 for call 

equipment Y require r prior^BIHQ t or°other e authoiity? iCal 



0 A 

c 7 MA^L ROOM/^2j TELETYPE UNIT f~1 

54HEB9 1977, 


not recorded 

y FEB 7 1 $77 




C-4a <R«v. v 

FEDERAL BUREAU OF INVESTK»ON 
WASHINGTON, D. C. 20535 

DATE: 2/1/77 

701 SAN, BOSTON 

ATTN: MIKE STUART 



TECH EQUIPMENT 


• Invoice of Contents * 


CJ Crypt .-'•Trans. 

Q Document 

1EA HEEI MIAN TONS GENERATOR MODEL 84TG S/N 400 FOR CALLjDlVERTNR 

J pft Radio Engineering 
sVt'r ISPS 


FEB 01 1977. 


itM 


717429 


Special Jnsfruc 

Mail Room: Ssow^jTpment ,<&te and registry number. 

Shipping RoomY^^Vshipment date; bill of lading number; 
initial invoice; VeiJk q , ^ ) Section cheeked in block; after 
initialing in block* invoice to be placed in administrative file. 


FBI File No. 


80-781 


?0F 


"VIA REGISTERED MAIL” 


u?( i 




1 — Mr. Wilgus 


U 

4 


SAC, Las Vegas 

(Attns SA R. J. McKinley) 


February 19 , 1974 


Doctor. FBI (80-781) ' , JJ$60) 

0%Ll A ,n<z and f,‘/e + ,/a/l ^ h ' 

TECHNICAL EQUIPMENT- , * ' - { ^ 

TELEPHONES - GENERAL 

In 

w <*>' 1 - *< ~i* m 


□ Equipment listed below has been received. After repairs have been made it will' be 
returned to your office. 

□ Equipment listed below'has been repaired and is being returned to your office. 

Tyl Equipment'listed below is being shipped to your office for Q permanent temporary 
assignment. ^SC 3 I 30 ClCJOC 9 CX 9 eKX?C}Gj^ 3 t!}SCX 3 €!^R 3 l^iCXX 9 C^X 

£3 1 each Telepatcher, KTS-500, serial number H-351 

r 

This equipment is being lent to your office to 
determine its usefulness at your night clerk's station. 

If, after trial, it is judged to be useful, you may wish 
to arrange for permanent acquisition of a similar device, 
either from the manufacturer or through your local telephone 
company on a lease basis* 


m 


( 4 ) 


H- - , 




3 


N ° T RECORam 

4 20 < n 74 / 




\ 


l 


in I ^ 


m MAILED 25 

FEBI9J974 

— r 


TELETYPE UNIT CD 


7*66 (R^v. 5.19.72) 


7 




sac, Las Vegas 

(Attn * S * R. j. McKinley) 

Director, FBI (80-781) 

J»r C «i' ICAL equipment 

TELEPHONES - GENERAL 

o> 

Xo Jl-i 


1 - Mr. Wilgus 

February 13 , 1974 




if 


Q Equipment listed below ha* h*. ■ v, ' 

returned to your office, rec <^ed. After repairs have been made it will be 

® E, ui pl„,' Zll T "’I k "” ,tPa '" d Md " b ' i " 8 ' e ‘"'” e<i <*«■ 

ass,5n "‘“'' *— «. mKmpora(y 


s 77 ", 1 ■ 

D STS ‘ 500 ' £eriai — ** 

I*ternins ff *•*■* lent to your of«, . 

T*/ after trial ?*T a 08 ? *t your night ei«^v»f °5* . e to 
to arrange for newL^ 8 fudged to be useful *«J? station, 
either f?» Se*2f^ en J *^i*ition 2f a ii£?? wish 

C0 " P “ y 08 « *•«»• b,“if r ° r thro ° 9 h your toSu^SSSo^ 


f|5 


(4) y 



/ i> j 






NOr 'r- ‘ * 

f, t.U‘HoCT 

522 FEq } 41974 




teletype UNIT 1 — 1 




S-<0 me*. I- !?•<?) ' , i\ 

FEDERAL BUREAU OF INVEST®TION / - ' ^ 

WASHINGTON. D. C. 20535 ^ w 

DATE: 2/13/74 Re; TECHINCAL; EQUIPMENT 

to: SAC, LAS VEGAS 

ATTN: SA, BOB Me KINLEY ' ‘ 


“55 Je5» 

i xH583. I FEB 13 1974- \. 
W — 


.Invoice of .Contents,. 


1 ea. Telepatcher model KTS-500 SN. B-351 
and Manual. 


Q Crypt,*Trans, 
tD Document 
' & C 

tadio Engineering 

ktm 



Special Instructions} 

Mail Room: Show shipment date end registry number. 

Shipping Room: Show shipment date; bill of lading number; 
initial invoice; return to Section checked in block; after 
initialing in block, invoice to be placed in administrative file. 

5 1 FEB 2 1 ROISTERED AIR MAIL 

_ /V 


FBI File No. 80-781 




f«r 

*• • tRtfv. i- 19*67) ' 

FEDERAL BUREAU OE INVESTIGATION 
WASHINGTON, D, C. 20535 


PATE: 


12/8/72 


R e . ’EVALUATION UN IT 


TO; TELEPHONIC EQU I PMENT CORO. 
17281 EASTMAN STREET 
1 IRVINE INDUSTRIAL COMPLEX 
,‘SANTA ANA, CALIFORNIA 92705 


, Invoice .of Contents , 


ONE .{ I ) i£A. KTS-500 


h 




71845i 

JMAIIjEQ fi 

DECS l$72 


,C3 Crypt, -Trans. 

fi/*c 

a efps 


Mail Room: Show shipment date and regUUy uuiiJjenT^"™'"' 
Shipping Room: Show shipment date; hill of lading number; 
.initial invoice; teffim ,tn S w* in block; after 
initialing administrative file. 

REGISTERED. AIR MAIL 


FBI File No. 


? o ^ f ! 





so ~ 7 01 y // • 


Hay 20, 1969 


Special Agent in tCharge, San Francisco (60-440) 

Re: TECHNICAL EQUIPMENT 



Dear-Sir:- 


Beurlet 5/7/09. 

<? 



n EQuipmeaHtsf? dPSefow^ia« 
returned to your office/ 


Aft.r repairs have been made it mill be 


i I Equipment listed below has been repaired and is being returned to your office. 

TH Equipment listed below l is being shipped to your office for Q permanent . Q temporary 
assignment. Appropriate inventory changes should be made. 


ts 

Equipment requested in relet being forwarded under 
separate cover. Mo Inventory change necessary. 



'To) sort „a> 

£)?Looch . ^ 

MoKlf " - — ir ■] , 


Bishop ^ 
Vesper 
Cqitahtfn ^ 
Jvonrqdi — . 

Got? mm « 
•fcojsen mm 

tdval 


S;i^&AY2-j }gg^t 


TELETYPE UNIT ED 


Very truly- yours. 




OfWONAl *OKM NO, 19 
may tf*a epmoN 
OSA YPM2X41 Cm 


) ^UNm^JS T ATEMCVERNMEN r 

'Memomndum 


TO 


FROM 


DIRECTOR, FBI 
ATTN: RADIO AND ELECTRICAL SECTION 

SAC, SAN FRANCISCO ( 66-440) 



subject: 


TECHNICAL EQUIPMENT 
SAN FRANCISCO “DIVISION 





date: j5/ 7/69 


It is requested 'that the Bureau -forward to 
San Francis co a replacement trelephone i : ineman f 3 i 
test :set , black rubber finish -with a large dial 
to replace a metal test set that was broken when dropped 
from a pole to the pavement below. Inasmuch as this 
is a replacement, no inventory change will be made. 


n. i 





o Bureau ''' 

X *• San Francisco 
WBW:svl 

(3) /'/ /i 

~pj> • j 

Buy U,S, Savings -Bonds Regularly on the Payroll Savings -Plan 







_9019M9»-9* 


f 




OPTIONAL FORM NO* 10 
A); Y J#73 KOl-UON , ^ 
^G*A FfMH (41 crm 101*11.4 


UNITED STATES GOVERNMENT 

Memorandum 


•fl® 



to : : Hr. Cochran* 

from : w.D. Campbell 

subjectU^oLBY COMMUNICATION CENTER 
r 

PURPOSE: 


date: 2-6-79 




* (Aim, P<«- 

:0*jk‘ AO Adm*_ 
0 *. ADI«*W 
As»i' Otai 
A dm, $*fv. if ^ mi t 
C rfm, 

& ftfi. 

L«bor»*>ry ; 

l*5<j CovJVmmm* 

M 

R*«. My**- - , — 
Sp*e> **w- - , — 
T*cK $«rvi.« M 

T retatof ****** m-. 
*vWi« Aflfc 0ft„ 
T*l«ph«A« Rm. - 
1 0lr*<«*/ • S#c'y wi 


The purpose of this memorandum is to set forth 
k information received concerning the relationship between 
) i y) l _^albv-.D ivision^Qf--Ra tcliff^Comp j any,>«Jncu and. Chandler and 

^/^ompanies— Q^Jk^k^hMm 


DETAILS:. 


On '1-26-79, _ 

and Companies. Reno, Nevada., 


•*g. n^V qhv&vJf$ 



kk $2 sr^5 


T & Chandler 

. telephonically advised SA 

rtnat "his company has ceased being the 

J — . m * « r* • /I - 



ma rketing rapresentative for the Colby Communication Center 
manufactured by the Colby Division of Ratcliff Company, Inc. 


]advised that the Bureau order for 


four Colby Communication Centers has been processed and 
would not be affected by the severing of the relationship. 
The reason for severing .the relationship was explained as 
a difference in philosophy between the two companies in 
marketing techniques and manufacturing schedules. 


r 


($) 


b6 

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, | stated that his company intends to 

market a new negotiation center manufactured by Chandler an<y(^.. 
Companies. This device will provide the basic telephonic 
interface needed for negotiations, and eliminate the radio 
patch function and probably the headset amplifier function, ^ 
for an audio only net. The reason for this move is to provide 
a basic negotiation center at a price between $1500 - $2000, 


1 - 
1 - 



Mr. Joseph % 

ATTN: Behavioral Science Unit 
Mr * Moore ■ 

ATTN: Mr. L. ( Stephen**}^ 

Mr, Cochran' ' . W ' \ O t \ & 

Mr. Campbell jtsOC/ WV* 


9&J 


Heineman 
Navlor 


16 FEB B 1979 


»ofo-iU 




(CONTINUED OVER) 


'avings Bonds Regularly on the Payroll Savings Plan 



F9I/DO, 



MEMO COLBY COMMUNICATIONS CENTER 


and thus within the cost range that would be affordable for 
small police departments, as well as the larger departments. 
Prototype units are scheduled to be available in April 1 , 1979. 
At that time, one each will be sent to the Bureau, Los Angeles 
Police Department, New 'York; City Police Department and several 
other Federal and local agencies for evaluation purposes.; 

RECOMMENDATION; 


None.;, For information only. 



APPROVED; 

! Director ' 

A$$OC.Cnr. 

Oep. ADAorrt. 

Oep.ADlnv. 


Adm. Serv. 
Crtm. 1nv.__ 

Merit. . 
Intel 


— laboratory 


Legal Court, 
plan. & tnsp.’ 
ROC' Mfflt _ 
Tech. ServiT 
Training 


Public Affs. Of f._ 


t 


t* ' ■ +' 


Airtel 


SAC, Miami. 
Attention: 


SA Ben Grogan- 


Direptor, FBI 
111 COBPORATION 


4/8/80 

1 - Mr. Bayse 
1 - Mr. Wifczel 

1 -I 






leineiuan > A / r- 

rtTfS ; ' 


From; 


This comunicatioiTrefers to a specialized tele- 
phone intercept dev ice being constructe d for the FBI by an 
annnymftns r»llenfc nfl | (attorney) * 

I I was in contact with SA Grogan in the 

simmer of 1979, after which SA Grogan referred the matter to 
FBIHQ, Engineering Section. The inventor of this telephone 
device has formed a. corporation and in February, 1980, a 
purchase order for $100' was issued to the corporation for 
the construction of a/prototype device. 

» 

| | has steadfastly refused to disclose the 

identity of his client, the inventor of this device. 

However, since a corporation has now been formed, inf^p^tiST"') 
about the corporation is now open to inspection, 

h S', 


The name of the corporation is 111 Corpora 
No further information is available. Information rt 

lst . V 


6120 Washington Street 
Hollywood. Florida 33023 


ana| 1 

Miami is requested to obtain all available infor- 
mation concerning the 111 Corporation, including identit^^of crr-r- rr. 
officers, officers personal background, financial status and 
financial backing. APR 9 1983 


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Re: 111 Corporation 


involved 


Miami should 
in th e 1 ' 
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indices on all persons 


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NOTE: This communication will secure (additional information con- 

cerning, : the background of persons currently furnishing Title III 
equipment to the FBI so that a better evaluation can be made 
regarding their .professional responsibility. 



t, 


- 2 - 



TO 


UNITED STATES GOVERNMENT 

Memorandum 

•- Mr. Bay se /k 

FROM : R. w. Witzei 

SUBTECr^TRXR-RERQRT, OP 9/9-10/8 0 ' 

TO L0UISV1LLE-FXELD-0EEXCE 
TECHNICAL ASSISTANCE - PEN REGISTER 


UNITED STATES DEPARTMENT OF JUSTICE 
FEDERAL BUREAU OF INVESTIGATION 



date: 9/25/80 


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Reference, Louisville. teletype, dated 9/8/80, copy 

attached.. 0(2®^ f I K MiCIV’lW^ 

PURPOSE : To report; the, results, from the. trip of 


to Louisville, Kentucky, for technical, assistance, in a. 
peri, register installation. 

DETAILS :. The 'Louisville. Office, has for several, weeks been 

Unsuccessful in recovering dialed numbers from four 
telephone, lines.; The following jSfameters and problems were, found 
with the instal lation : 


(1) All four, lines leased from the telephone company 
were, about 14 miles from the plant (all carrier) . 

(2) The. Beta method was employed for number" retrieval 
Using loop extenders, SAR’s, and 51- C DNR in the 
circuit. 


& 


(3) Problem 1: 


«» dM 2 ‘T?> -IV ^ 


b6 

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The. battery feed from the. telephone: company' was 
not; correct.; Four separate, feed lines were, requested with, 
no commonality existing between, them. The. telephone. * 
company used a. common, feed circuit; resulting in J 

insufficient voltage for. four loop extenders.; AlsO/ga 
intermodulation existed, in. all four circuits.; 

n fif'T 2 ^380 

Problem 2: ® OLv 


J 




R. W. Witzel to Mr.. Bayse Memorandum 
RE: TRIP REPORT OF 9/9-10/80 


Problem 3: 

One of the, SAR ' s in the plant had the; ground, post on 
the, 110V plug clipped off .; 

(4) Results and recommended corrections:; 

Problem 1: 

Request the telephone company to provide four independent; 
battery feed lines for the loop* extenders.; If this is not possible, 
the FBI will provide, its own battery feed at. the bridge; point.; A. 
power supply Was sent; to Louisville. 9/10/80, and will arrive; at ; 

7:10 p.m. , same. date. Intermodulation problem Was corrected by 
terminating the battery feed terminals; of each loop extender with 
a 20 MF capacitor. 

Problem 2: 

All loop extenders Were recalibrated for a 43V threshold 
voltage (normal 40V) .; 

Problem; 3:; 

Use a new power, cord for the. SAR. ; 

RECOMMENDATION :; None.; For information only.; 


APPROVED: 


iVpctof 

Exec. AD-ACin 
Exec. AD-!nv, 
Exec.AD-l.ES 


ACffl. S?rv. , 
Cr'rrn. !nv.^„ 

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Legal Coun. 
Pfcn. & Insp. 
Rec, f/gnt. 


Rec. v-gct. — , i 

Tocl, Scrvs Ifr 

TroJn-n'a J 


’rain*ft'3 
Off. of Cor,g. 

& Public Afts 


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LSO001 2521539 
00 HO 
DE LS- 

0 081530Z SEPt/80 
FM FBI LOUISVILLE (183-164)' <P) 

TO DIRECTOlf FBI IMMED IATE 
ATTENTION /tECHNICaT'sER VICES DIVISION ENGINEERING 4 SECTION 


Aw' * 
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BT * 
UNCLAS 


ET AL; RICO (B> ; 00* LOUISVILLE. 


RE LOUISVILLE TELCAL TD BUREAU SUPERVISORS WILLIAM HEI NEMAN 


AND 


SEPTEMBER" 8 , v 1980^ 




. AS REFERRED,' TO' IN REFERENCEDXTELCALUt LOUISVILLE HAS FOUR' COURT * 
ORDERED PEN REGISTERS? I Nr CAPTIO NED CASEV. LOUISVILLE IS ATTEMPTING ft 




itt'l 


ATWMONlfORfPENi-REGISTERS^ rab^LOUISVIliEE' OFFICE VIA" 14? MILE OF 

\* ' ^ 1 - -,*;•$ j *’ * „?if v«‘ /, - ( ‘ j 

CARRIER^. LINES; WITH NCX SUCCESSW IT I & REQUESTED THAT AN ENGINEERING' 


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SECTION REPRESENTATIVE TRAVEL; TO LOU I SV ILL E AS- SOON AS POSSIBLE 

“•*’ • ; ’ ( ■ a- .* \ t 

TO PROVIDE ASSISTANCE TO, SOUND TRAINED AGENTS- At LOUISVILLE. 

A, - « * - - . — 


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;#00I^i . >•? fl^V. '■ =//- - - a.' 

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MAI LED 8 


7-66 (Rev. S-&-78) 


« I 

SAC, Los Angeles 

Attentions SA 

Director, FBI 


TECHNICAL EQUIPMENT 

Telephones (80-781) 




2 - Technical Service# Div 
1 - Invtry Km 183$ 

1 - Eng Invtry Mgt*Km 1B0I6 
2 - Laboratory Div * 

1 -- Lab Invtry Mgt Km 1B239 

1 — SaM Invtru Rm 


7/23/82 


b 6 
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1 " 
1 - 


CD Equipment listed below has been received. After repairs have been made it will be 
returned to your office. 

Q . Equipment listed below has been repaired and is being returned to your office. 

Equipment listed below is being shipped to your office for {gj permanent 
Q temporary assignment. Appropriate inventory changes should be made. 

Your request for equipment listed below has been placed on record and 
o will be considered Q wil1 be ordered when funds are available. 

The item(s) Q has Q has not; tjg have Q have not; been put on automated 
inventory. 

The item(s) Q does Q does not; g} do Q do not; have a label affixed. 

O 12 each telephone ponch-on terminal blocks with covers 
2 each red field terminal blocks 


1 each patch panel model ADC bantam jackfield, S/N 10 

Notes Red fields and patch panel shipped from Quantico 
via U. S. Mail. 






Date: 7/20/82 

To: SAC L OS AN( 

ATTN: I 


FjDERA^^Rf*/' . INVESTIGATION-^ 
r; 1 } - 20535 

V J I “ » ' 

_ T. f '*-j* s 

Re: > y L ' TECHNICAL EQUIPMENT 




.Invoice of Contents 


FBI File # 80 “ 781i 


12 ea telephone punch-on terminal blocks with covers 
2 ea red field terminal blocks 

1 ea patch panel model ADC bantam jackfield SN 10 

Note: Red fields and patch panel shipped from Quantico VIA U«S. XXH MAIL. 


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■ - * 


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T| 717703 

I. 

E 717704 
717705 


1 ' ENGINEERING SECTION DOCUMENTATION 

tj RETURN TO ENGINEERING SECTION, ROOM 18046 (Telelift. 253) 


Tills Shipment P.adkaged byL 
No. of Packages \ §L si 


|& HQ 


Ext. g 74 * Ship By A- 

, Shipping #., 


'(M^/TTVCc 

< method to use) 



EXECUTE FD^IA^RANSFER EQUIPMENT FOR PERMANENT ASSIGNMENT 


7 



8-269 (Rev. 1-20-82) 



D • 

FEOERAL BUREAU OF INVESTIGATION 
WASHINGTON, D. C. 20535 


Date: 4 / 2 6/82 Re: TECHNICAL EQUIPMENT 

To: SAC LOUISVILLE 

ATTN: SA LARRY BOND 

« i 

Invoice of Contents 

FBI File # 80-781 



2 each amphenol punch on blocks 


ENGINEERING SECTION DOCUMENTATION 
RETURN TO ENGINEERING SECTION, ROOM .18046 (Telelift 253) 

iName of Shipper J Fxt. , 2741 

>i / 


Ship Ry MAIL 


This Shipment Packaged by, 


I 


(method to 
Shipping # . None 



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No. of Packages/ 


Pmm 


\EXECUTE FO'-SI4 TR<fN5l^R EQUIPMENT FOR PERMANENT ASSIGNMENT 

V* 


MAILED 10 


7-66 (Rev. 3-S-78) 


SAC, Cleveland 

Attentions SAl 


Director, FBI 


TECHNICAL EQUIPMENT 


CMP (80-781) 

<7 


2 - Technical Service? Div -*/ 1 
1 - Invtry Rm * 1835 
1 Eng Invtry Mgt Rm 1B016 
2- Laboratory Div 

l*~ Lab Invtry Mgt-Rm 1B239 
1 - Sect Invtry Rm 3456 


4/20/82 


1 - 
1 ~ 


/7?/ <z j'of/m O' 


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Equipment listed below has been 'received. After repairs have been made it- will be 
returned to your office. 

Q Equipment listed below has been repaired and is being* returned to your office. 


XX Equipment listed below is being shipped to your office for permanent 
Q temporary assignment; Appropriate inventory- changes should be made. 

Q Your request for equipment listed below has been placed on record and 
o will be considered Q will be ordered when funds are available. 

The itein(s) Q has Q has not; Q have Q have not; been put on automated 
inventory. 

The item(s) Q does O does not; O do O do not; have a-label affixed. 

□ $ each punch-on terminal blocks 25 pair 
6 each covers for 66 terminal blocks 


Hotes Equipment requested telephonically by SA Canaon 
Laparo on 4/15/82. To be used in technical plant wiring 
in new office space. 







0*4a (Rev. 8*13-79) 

FEDERAL BUREAU OF INVESTI 
WASHINGTON, D. C. 20535 



)N 



DATE: 

TO: 


11/6/81 


Re: 

Technical Equipment 


SAC C hicago 
Attn: l 


Invoice of Contents 


1 each Bushcoa Extender Model 2009 
SN 50330 FN 448783 



Hand carried by SA j I on 11/6/81 

to the Chicago office. 

Shipping ft ' 

Shipping Method — — 


QMailRoom: 1B327, TL 152 
(registered mail) 

C7JPSM - Supply Onit, 1B353 

(not registered) , - 

' * Job 

hlC 


FBI/OOJ 


fOMOViSisg 


] 


ft 

\ 



DEC LAS S IFICRTIQN AUTHORITY DERIVED FROM: 
IBI AUTOHATIC Dill LAS SI FI OPTION GUIDE 
DATE 04-23-2014 F7.5M2€K52 


Memorandum 




material Attached 




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Mr. Bayse 








D»tc 11 / 23/82 




. ivuNIATURE TAPE REUffluyjuK> y 

REFERENCES :; 1. By approved memorandum R. : W. ; Witzel to. Mr. Bayse; dated 4/18/80, 
captioned as above, the FBI contracted to procure 95 Nagra Model 
JBR recorders; and playbacks. 

■ 2. Memorandum R.: W._ Witzel to Mr.; Bayse dated '025/80, reporting" the; 

results. of the only On-site contract monitoring trip and requesting approval for 
a future; two-man. contract monitoring trip to the manufacturer in Cheseaux, 
Switzerland.; (Copy attached).; 


3. Cableg ram Kudelski, S.A., Cheseaux, Switzerl^d 

SA l [ advising status of contract, and requests 
meeting at Kudelski, S. A., Cheseaux, Switzerland, last, of Mi 
review breadboard of recorder and playback; units; before^ a^5i 
run is made; to; produce units for field evaluation.; ( Copjy ai 


.DETAILS :; By referenced memorandum, dated 9/25/80, the; j^su^Tof the. on-site 

contract monitoring trip' were reported and approval was requested for 
a. future two-man. contract monitoring trip to evaluate the. breadboard, recorder 
and playback units. By referenced cablegram, the manufacturer has advised that 
the. breadboard recorder and. playback; units will be. available; for evaluation last 
of November,- 1982.; Manufacturer requests; that. Contracting Officer's Technical 
Representative (C0TR) travel; to; Cheseaux, Switzerland, to test, analyze and 
choose; alternative ways of meeting contract' specifications.; Numerous new, 
innovative, and untried features are being utilized in the. Nagra Model JBR recorders 
and will r equire e xtensive testing, analysis and. debugging to produce the. best, 
units.; SA l ~l wi ll hand le the technical, evaluation;, of the breadboard, recorder 
and playbacks and SA | l will handle hybrid circuit, technology.; The. costs 
will be, $992 in. air travel plus seven, days; per diem at $81. per day for a total 
cost, of $1,559 per person. 




FBIHQ,; Attn.; 
Contract review 
r, 1982, to 
fisembly" line. 
6).; b6 


1 Mr. : O'Malley 

Attention: Liaison Unit. 

.1. - Mr. GroOver / yh 

1 - Mr . Bayse; fk j 

1 - Mr. Witzel //L/ „ 

i 


•JBR: job (7) 


m, to- w 


35 DEC 7 *98? 


(CONTINUED - OVER) 


it 


roi/ooj 



Witzel to Bayse Memo 

RE: : MINIATURE TAPE RECORDERS 




Both the FBI an d T hav e active programs to develop and build more 
effective digital adaptive filter's. | . . 1 existing FBI 


digital adaptive filters were demonstrated and| ladvise d that th e FBI 

.had contracted to procure two significantly improved units. SA | | is the 

COIR on FBI Contract #J-FBI-82-093 to procure, these digital adaptive filters.; 
These filters are used to remove mashi ng sound sources, such as a TV and/or 
radio from an intercepted conversation! 


b6 

b7C 

b7D 




signal processing' project mana ger, 
landl I to stopover at 


Authority is 


hud SA | [ is the. 

oeing requested for SA *sT 

enroute. to Switzerland [ The only costs 

involved would be a $25 stopover fee and 2 days per diem at $l0*>. & 









Witzel to Bayse Memo 

HE:- MINIATURE' TAPE RECORDERS 


3. That SA‘s[ 


Jind[ 


]be authorized to stopover id" 


to inspect, test and. evaluate a small encrypted transmitter at a total cost of 
$393.; 


b6 

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b7D 


APP ROYcO: 


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f: 

Cxes.AO^w. 
Exse. AD-LEO 


** it 


Adm.S ervs 
CritYi, few. 





LsSoratwy 

U32 J Cova. _ 
Ctt. Ceng. 

♦. r;*!S3 
R33. Mcftt- 
TcctwCecvs 
Trii-iba 


1SE£ 


Enclosures (2) 


- 3 - 




DEC LAS S IFICRTIQN AUTHORITY BERIWEB WE£M: 
IT&X AUTOfclATIC DEC LAS SXITICATXOI? CHJXDE 
DATE 04-23-2014 T1EM2SW52 


Mr. Bayse 
R. W. Witzel 




uu 

route in envelope < /" 

{ / c- 


1 


9/25/30 


i> r 


MINIATURE TAPE RECORDERS 


REFERENCE : Memorandum R. ; W.; Witzel to Mr. Bayse. dated July 13 , 

1980/ captioned "Miniature Tape Recorders." (U) 


PURPOSE :; To report and place on record the results of the. first; 

contract monitoring trip on FBI Contract #J-FRI-3Q20 . (U) 


To recommend a second contract monitoring trip to evaluate/ 
test/ analyze and select the best record gain system, drive motor 
design and record head design. (U) 

SYNOPSIS : From A ugust 25 to 31, 1980, SAs I l and l 

and ET l [ met with contractor representatives and 

reviewed the progress on f £pICon tract $J-FBI-8020. The following 
improvements to the reco^^^e«^e^ig recommended:; (U) 

1. Install strain relief for the mike cable, increasing 
the length of recorder by 5mm. (U) 

2. Install; four size "N" batteries for the power 
supply, increasing recorder thickness by 2mm. (U) 


3. Utilize a digital watch crystal for the tachynetrical 
signal. * (U) 

4. Record the tachynetrical signal in the center of 
the tape. (U) 

5. ; Adjust the frequency response to be flat with. the. 

mikes under clothing.; (U) 


6. Specify total hannonic distortion to bo less than 
5 percent. (U) 


7. ; Include a playback pencil.; (U) 




Memorandum to Mr^fcayse 

Re: MINIATURE TAPS RECORDERS 



3. : Install a hinged, lid. (U) 


9. Install art audio, output connector and an 
external power input connector. (U) 


10 . 

11 . 


v Design and install I 

I — 

Design and install a new low-speed drive motor.; (U) 


12. Design and install a new high isolation head.; (0) 


The following, improvements are being recommended for 
the playback Unit: (U) 


b7E 


1. Utilize the servo system of the Nagra "T" 
audio recorder. (U) , 

2. Add. a capstan motor/ a capstan, a pinch roller 
and associated electronics.; (U) 

3. Add playhead az imuth' ad-ruatpent. (u) 

4. Add a 2,048 Hertz* nulling circuit. (U) 

5. Add a treble control. (U) 

6. Add level meters. (U) 

7. Add 40 dB gain amplifier. (U) 

_8. Add four tiir.es playback speed capability. (0) 

9. Add a remote start signal. (u) 
lO. Add a tachymetrical output connector. (U) 

As reflected in the details, numerous new and innovative 
features are being proposed for the Uagra Model JBR recorder. Many 
of tlies e features are untried, and have not been, implemented in a 
small, low power, high reliability, professional body recorder. 

To develop, te3t, debug and. analyze all of these features will 
require extensive contract monitoring. A two-mart, contract; monitoring' 
trip will be required to monitor those changes. The costs per 
employee will be $1,200 air travel plus six days per diem at ='100 
per day for a total travel co3t of $3,600. Thi 3 I 3 . a very small 
price to pay for changes worth more than >200,000. This travel is 
necessary and should be approved. (U) 




Memorandum to Mr^bayse 

Re: MINIATURE TAPE RECORDERS 


RECOMMENDATIONS : 1. That the listed improvements to the Uagra 

Model J3R recorder be approved. (0) 



V 


2. ; That the listed improvements to the Nagra Model PU-1 
playback be approved. (U) 



3. That a two-man contract monitoring trip to the 

manufacturer in Lausanne Switzerland be approved. (U) 


m 

DETAILS : By sole source negotiated contract number J-F3I-802Q , 

the FBI contracted With Nagra Magnetic Recorders/ Inc., 

New York, New York, to procure 95 Uagra Model J3R Miniature. 

Stereo tape recorders, 95 Uagra Model PU-1 Playback Units and, 
three Nagra Model TBEC Time Base Error Corrector Units at a total 
price of 733,302.63 Swiss Francs. Nagra recording equipment is 
developed and manufactured by XUdelskI, 3. A., Lausanne, Switzerland.; 

By memorandum dated July 18, 1980, captioned “Miniature 

Tape Recorders," it Was appro ved for Contracti ng Off icer’s 

Technica l Representatives, SA l l and ET' I I 

~| to travel to Lausanne, Switzerland, to review all alternatives 
for meeting FBI contract specifications and to Select the best 
alternatives. (U) 


- 3- 



(U) 


b6 

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Memorandum to Mii^Bayse 

Re: MINIATURE TAPE RECORDERS 



By addendum to thi3 memorandum, i t Wa3 approved for 

Special Assistant to the Assistant Director 

to participate in this review since Kudelskiy S.A. , has always 
been agreeable to changes in the specifications to improve the 
product. (0) 


v Fr om August 25. 1980. to Augu st 31. 1980. SAsI I 

I l and I I and ET I [ met with 

the following officials of Nagra Magnetic Recorders, Inc., and 
Kudelski, S'. A., in Lausanne, Switzerland: 

1. Stefan Kudelski, President and owner of 
Kudelski, S.A., Lausanne, Switzerland, 


2 > I I 

Kudelski, S.A., Lausanne, Switzerland, 

*3.. | | b6 

Nagra Magnetic Recorders, Inc., N.Y., N.Y. , b7 

4. I 

Development , 

Switzerland, 

and,, as needed, numerous other engineers and project managers 
to discuss specific problems. The objective of these meetings 
was to produce the very best recording, playback, duplication 
and enhancing system possible. As this memorandum Will record, 
numerous 3 teps were taken to meet thi3 objective, but a future 
meeting is required to insure this project meets this objective. (U) 

* ‘ k 

The FBI presently use3 the Nagra Model SNST Stereo Tape 

Recorder and the first discussions centered o n any op erational 

■or technical problems with this recorder. SA| [and EtI”” | 

are. the project managers for this 5 recorder. It was noted that the 
FBI has used the Nagra Model SNST Recorder to make thousands of 
intelligible recordings during the last three years and that this 
recorder i3 performing in an outstanding manner. This experience 
reflects that the number one failure of this recorder (les3 than 
1/50. percent) has been caused by the microphone wire being pulled 
from the connector. Ways of correcting this problem on the new 
recorder were reviewed and it Was decided to install a serpentine 
path, on the recorder for the microphone cable. The serpentine 
path will serve as a strain relief.- Any pulling force exerted 
between the recorder and, the microphone cable will be absorbed 




Memorandum to Mr. Bayse 

Re: MINIATURE TAPE RECORDERS 




by this serpentine path and not by the microphone connector. 

-This solution will .correct the problem but requires space. It 
will Oe necessary to' increase the 1 length of the , new recorder by 
Sinn. It should be noted that this will increase and not decrease 
the cost of producing thi3 recorder. Kudelski, S.A./“Ka 3 agreed 
to make this change at no cost to. the FBI if requested. This 
change should be approved.; (0) 

The .contract power specification requires* two 
commercially available rechargeable button batteries that can 
power the recorder for 2 1/2- hour 3. * With additional space, it 
is now possible, to U3e four size "N" batteries to power the. f 
recorder. This will result in the> following improvements:; (U) 

1. Size "N" batteries may be purchased throughout 
the United States. (U) 

, 2. Size /, N* batteries do not require recharging. (U) 

3. Size "N M ba^eS^w^ta^^capable of powering 
the recorder - for ’*2' 1/2 hours of record plus 
four hours standby. (U) 

4. Four size "N" batteries produce six volts DC 
eliminating the, need for a. DC to DC converter 
to convert the 2.4 volts generated by two 

.button cell3 to 5.0 volt3, DC. (U) 

Size "N" batteries are slightly thicker than button 
cells and will require the recorder to be 2mm thicker. 

Kudelski, S.A., ha3 agreed to make this improvement at no cost 
to the FBI if requested. Thi3 improvement should be approved.; (U) 

The contract specifies that the recorder .utilize a; 
tachymetrical signal to cancel "wow" (slow speed variations) . 
Research wa3 conducted to determine the best frequency .for this 
tachymetrical signal. A signal frequency must be selected that 
will* not have many dropouts or any .amplitude modulation when 
recorded on 'the tape. At first, standard technology and design, *. 
teclmiques were followed resulting in selecting a. frequency just 
outside the frequency bandwidth of the recorder (5,000 ,‘iiertz) .; 

Test measurements, indicated that, at this frequency, numerous 
dropouts occurred, and the signal amplitude varied according, to 
the smoothness of the tape oxide. and the spacing between the 
record ‘head and tape. This is not acceptable. It was decided 
to reduce this frequency to approximately 2,000 Hertz. Tests 



Memorandum to Hx^Bayse 

I*Q t MINIATURE TAPE RECORDERS 




indicated that at 2,000 Hertz, the tachymetrical signal is 
satisfactory from a dropout and amplitude modulation standpoint.; 
This frequency is in the middle of the frequency bandwidth of the 
stereo audio tracks and if any crossover occurs,; it will be heard 
when, the audio tracks are. played back.; Kudelski, S.A., agreed to 
utilize Special shielding techniques and to install an. electronic 
cancelling network to reduce this crossover to an. acceptable level. 
Selection, of this frequency will increase, the. cost of producing 
this recorder,; but again. Kudelski,. S.A., agreed to make this change 
at no cost to the FBI if requested. This selection, should be 
approved. (U) 


Next, the stability of this 2,000 Hertz tachymetrical 
signal Was reviewed. Since the FBI has digital signal processing 
equipment that may be clocked by this tachymetrical signal during 
playback, the FBI desires to have this tachymetrical signal be 
very stable and have Very low "jitter." A review of all. the. 
alternatives was conducted and it was decided to utilize the 

1 to generate this tachymetrical b7E 
signal. Several advantages Will result from this choice. £s£ , ir . 


First, if this signal is ra diated and anyo ne detects it, 

_ t 1 • V. * - ■m m * a 


they may believe they have detected af 
tape recorder. 


Second 


and not a 


little battery power. 


is very small and consumes very 


[01 


Third, [ 


characteristic needed by the FBI. g 


are very accurate and stable, a 


* * 

This requirement will increase the cost; of developing 
and building this recorder, but Kudelski, S.A., has agreed to add 
this feature, if requested, at no cost to the FBI. This feature 
should be added. (U) 


b7E 


Experiments Were conducted to determine if this tachy- 
metrical signal should be recorded in the. middle of the. recording 
tape or along the edge.; When this signal was recorded on the edge 
of the recording tape, edge damage produced many dropouts and 
caused amplitude modulation.; When this signal was recorded in the 
center of the recording tape, dropouts and amplitude modulation 
Were negligible. Kudelski, S. A., agreed to record the tachymetrical 
signal in the middle of the tape. This specification should be 
added to the contract.; (U) 





Memorandum to Mr^payse 
Re: MINIATURE TAPE RECORDERS 



Selection of al I b7E 

|and then recorded In the middle 

of the tape will produce an outstanding recorder. , jj \ 

The contract specifies a recording time of 2.5 hours 
but this will be increased to 2.5 hours record and four hours 
standby. (0) 

The contract specifies a frequency response of 170 to 
4,500 Hertz. Experience indicates that the microphone of this 
recorder will always be placed under clothing or concealed. 

Therefore, it was decided to calibrate the record amplifier and 
microphone to produce a flat frequency response When the sound 
waves travel through clothing. Thi3 is a first for the FBI since 
this specification is Usually measured in free air space. Thi3 
improvement should be approved. (U) 

The contract specifies that the recorder incorporate a 
compressor a3 used in the Nagra Model SHST recorder. One of the 
major concerns of the FBI. is amplitude fluctuations between the 
channels Which affects^oUr .ab'iliijy to digitally enhance a tape 
recording. The compressor" ofthe Pagra Model SNST recorder 
receives an 80 dB signal from the microphone and amplifier of 
the recorder and maps this 80 dB signal into the 51 d3 of signal 
space available on the recording tape. This compressor performs 
this function according to a predetermined mathematical formula. 

For example, if the electronics divides the incoming signal by two, 
it would map the 0-to-80 dB signal range into a 0-to-40 dB signal 
range. During playback, this 0-to-40 dB signal range is multiplied 
by two, restoring the sounds to their original loudness. Inaccuracies 
in mapping components can produce amplitude fluctuations. Since 
the FBI Want3 amplitude fluctuations to be minimal, a review of a 
more complex and accurate system was conducted. The new system 
would generate a signal proportional to the gain of. the record 
amplifier that would be recorded on the tachynetrical track of 
the recorder. (U) 

p 

SA | l has evaluated the Ithaco infinite compressor b6 

and expander system Which operates on this principle. One of b7c 

these laboratory quality systems costs over $5,000 and occupies . ■* 
over 1/4 cubic foot of 3pace. If a unit to perform this function 
can be developed, designed and constructed to occupy 1/16 cubic 
inch, it may be Useful in this recorder. No one knows if this 
task can be accomplished in a reasonable time. Kudelski, S.A., 
agreed to build a breadboard model of this system at no cost to 



Memorandum to Mx^t3ayse 

Re: MINIATURE TAPE RECORDERS 


the FBI if we . would ev aluate it and determine if this new compressor 
is better. SA | j agreed that if Kudelski would underwrite b6 

the full expense of this development, F3I representatives would b7c 

travel to Lausanne, Switzerland, and evaluate it. (U) 

The major advantages of the proposed comoressor system 

are: (0) 



1. It will have a dynamic range of 90 d3 
whereas the old System has an 80 d3 dynamic 
range. (U) 

2. If the incoming signal has a 3ignal- 
to-noise ratio (S/M) of 50 d3 or lower, 
it will not be degraded. (U) 

3. Amplitude fluctuations caused by homogeneous 

variations in the recording tape will be 
reduced by this system. For example, if 
the output level drops by 3 d3 across the 
tape, the following will happen: (U) 

a. The level; of thej audio tracks 

Will beL<2nvn.'^'>d&^ (U) 

b. The level of the tachymetrical 
track will be down 3 db which 
will cause the playback gain to 
be increased. (U) 

The compressor with a gain track is superior to a plain 
compressor from a technical standpoint, but other things must be, 
considered. An intelligent decision relating to this system can 
only be made after extensive tests. This system. Warrants further 
investigation. (U) 

, The contract specifies less than 2.5 percent third and 
less than. 1.0 percent, second harmonic distortion.; It was proposed 
that this specification be changed to less than 5 percent total 
harmonic, distortion. Total harmonic distortion includes all harmonics. 
This is a more meaningful specification and should be approved.; (U) 

The contract specifies an indicator to indicate that 
the power supply, tape speed, bias and audio signals are working.; 

These self-check features require ooWer, 3pace and are subject to 
misinterpretation. It was proposed that Kudelski, S.A., design 


- 8 - 


Memorandum to Mr^Pkayse 
Re: MINIATURE TAPE RECORDERS 




a playback pencil to play back the recorded tape. Thi3 pencil 
would resemble a penlite flashlight* would be self-powered and 
would have the necessary electronics to play back & recorded tape. 
Playing the tape i3 the best way of checking a recorder. This 
change should be approved. (U) 

The specifications require that the recorder have a lid 
that 3lides back and forth in a groove. This makes it hard to 
thread the recording tape. It was proposed to have a hinged lid 
that would open and close like the lid on the present tlagra Model 
SNST recorder. Kudelski, S.A., agreed to make thi3 change at no 
cost to the FBI if requested. This change should be approved. (U) 

r jj 

The contract does not require an audio output connector 
on the /recorder. An audio output should be available to modulate 
a transmitter or for test purposes. This audio output should be 
fully indicated. The only specification that may be degraded if 
this output is accidentally shorted is the recording time. 

Kudelski, S.A., agreed to add this feature at no cost to the FBI 
if requested. This change should be approved. (U) 

The contract does rio4ttS:»gwi r e -"a n external power input 
connector on the recorder. This feature would allow the recorder to 
be powered by a car battery or other power source. Kudelski, S.A., 
agreed to add this feature at no cost to the FBI if requested. 

This addition should be requested. (U) 


Stefan Kudelski is one of the world’s foremost recorder 
ex perts an d is familiar with all facets of recorder technology. 

SA| I advised him that several 3mall, portable tape recorder 


UK 

advised 

detectors were being sold on the open market in. the United States 
and that the FBI would like to make this recorder invisible to 
these detectors. Independently, Mr. Kudelski stated that these 
detectors cOuld be detecting the metal of the recorder, the noise 
generated by the recorder running, or any radia ted field. 

Mr. Kudelski then advised he believed | |to be the. no 3 1 

reiiabls way of detecting an ope r a ting ta pe r ecorder an 3 tha t I 


b6 

b7C 

b7E 


WaVs of preventing the[ 


* . : 


were, discussed: 


W, iji 


b7E 


1. Using a 


X im 


- 9 - 





Memorandum to Mr. 

Re: MINIATURE TAPE RECORDERS 



2 . 

3. 


[ 


X^ID] 


It was decided to utilizer 

i 


The 

problem, but the 
new and innovative approach to thi3 problem. 


fi rst two Wavs are the standard approach to thi .3 


stereo; therefore, it has two identical 
was decided to design a new record head would 


This recorder 
record-head tracks. It 


b7E 


b6 

b7C 

b7E 


| It iprpjfdiec^egCthat three months will be required 

to have a head for teatirfgv ‘ This head could be tested at the same 
time the infinite compressor is evaluated. Kudelski, S.A., has 
agreed to build this head at no co3t to the FBI and, if effective,, 
to use it on our recorders. SA l l advised Mr. Kudelski that 

this subject is sensitive to the FBI and requested that Our interest 
not be discussed With anyone. j£SJ^ ^ 

The contract does not specify the types of drive motor 
to be used to drive this recorder. A commercially available motor 
was tested and it was too noisy and did not possess the desired 
torque. The entire area of motor technology was reviewed and it 
Was decided that no one is presently making a small, high-quality, 
high- torque, highly reliable motor.; It Was decided to design and 
manufacture a motor at Kudelski, S.A. This motor will represent 
new technology and will be designed to run at very low speed. 

This feature Will reduce the frequency of the noise components 
and their level. It is conservatively estimated that it would 
cost $50,000 to develop this motor. If successful, Kudelski , S.A., 
has agreed to incorporate this motor in the contract at no cost. (U) 
\ 

' r The contract specifies that crosstalk be down 30 d3... > 

Since this contract was negotiated, the FBI has had a Digital 
Adaptive Filter developed that can sub 8 tract noise. The extent 
to which this filter can remove noise is limited by the crosstalk. 

The FBI wants this specification improved to 45 dB down. Research 
was conducted to determine where the crosstalk Was entering the 


- 10 - 



1 





Memorandum to Mr. &jsq 

Re: MINIATURE TAPE RECORDERS 



♦ 


system. It was determined that the crosstalk was occurring in 
the playback head. This i3 caused by the close proxinity of the 
coil windings. By special playback head design techniques, the 
crosstalk was reduced to 45 dB. Thi3 is an outstanding specifi- 
cation and rivals even the biggest and most expensive recorders. 
Kudelski, S.A., agreed to utilize these playback heads on the 
playback Unit at no cost, to the FBI. (U) 

As reflected above, numerous new and innovative features 
are being proposed for the Magra Model JBR recorder. Many of these 
features are Untried and have not been implemented in a snail, low 
power, high reliability, professional body recorder. To develop, 
test, debug and analyze all of these features will require 
extensive contract monitoring. A two-man. contract monitoring 
trip will be required to monitor these changes. The. costs per 
employee will be $1,200 air travel plU3 six days per diem at. 

$100 per day for a total travel cost of $3,600. This is a very 
small price to pay for changes worth more than $200,000. This 
travel is necessary and shouldJbe approved. (U) 

Next, the uhgjg! Pot the Hagra Model PU-1 playback was 
addressed. (U) ^ 

The contract specifies that the PU-1 must be capable 
of properly playing a tape recording made on the Uagra Model JBR 
recorder. It does not specify the components to be used. 

Therefore, all facets of the PU-1 Were discussed. (U) 

Since the PU-1 must be capable of cancelling "Wow’’ 

(low speed fluctuations) , many different transport configurations 
were analyzed for possible use. It wa3 decided to Use the fast 
acting servo system of the Nagra Model '’T" audio recorder. This 
is one of the be3t and fastest reacting transports available. 

The present market price of a Uagra Model ”T" recorder is in . 
excess of $10,000. The Nagra Model "T" audio recorder transport 
can make + 10 percent 3peed adjustments within 10 milliseconds, 
this means' that the mechanical transport will be able to cancel 
wow components below 100 Hertz. (1 divided by 10 milliseconds.) (U) 

, !:>..•■’ '‘ -fA This should produce a playback of outstanding quality 
and spectral purity. Kudelski, S.A., agreed to Utilize this 
transport in the PU-1 playback at no cost to the FBI if requested. (U) 


- 11 - 



Memorandum to Mr. B^kie 

Rex MINIATURE TAPE RECORDERS 


ssesfi^. 


The FBI presently owns ten each Nagra SNN , 200 each 
Nagra SNS and 250 each Nagra SNST recorders that are distributed 
throughout the field. These recorders are used to make thousands 
of recordings every year. Many of these tape recordings must 
be played in court. At the present time, these tapes must be 
played on a recorder. These recorders do not have a fast forward 
function, a powered rewind function, a counter to record the 
location of information on the tape or a playback head with 45 d3 
of isolation. Since 1574, the FBI has needed a special playback 
for Nagra tape recordings. (U) 

Ways of making the PU-1 a universal playback; unit were 
discussed. This will require a capstan motor, a capstan, a pinch 
roller and associated electronics. This will significantly increase 
the goat of producing the playback unit, but will widen its market.; 

SA | | agreed to allow Kudelski, S.A., to market the PU-1 

playback with no restrictiQn if Kudelski, S.A., would add this 
feature at no cost to, th«i r FBI* (ONLY THE PU-1 WILL HAVE NO 
MARKET RESTRICTIONS*. J s :'Ku^elski, S.A., agreed to add this feature. 

This significant change should be approved. (U) 

Making the PU-1 playback universal Will require that the 
azimuth of the play head be adjustable, because the azimuth may 
vary slightly for Nagra Models SNN, SNS, SNST and JBR recorders. 

This feature will allow the position of the play head to be 
optimized for each tape. The adjustment will be very small to 
prevent an Untrained operator from significantly mi 3 adju 3 ting 
the play head. This feature Will improve the quality of the 
playback unit.; Kudelski, S.A., has agreed to add this feature 
at no cost to the FBI if requested. (U) 

Since 2,048 Hertz will be Used on the Nagra Model JBR 
recorder for the tachymetrical frequency if any cross-over occurs, 
it Will be heard during playback. To prevent thi 3 , a 2,048 Hertz 
nulling adjustment will be added to the PU-1. Kudelski, S.A., 
has agreed to add thi3 feature at no cost to the FBI If requested. 

Thi3 addition, should be approved. (U) 

The contract does not specify that the PU-1 have a 
treble tone control. Thi3 feature will enable' the operator to . 
adjust the high frequency response of the played back audio signals 
for maximum Intelligibility. Kudelski, S.A., agreed to add this 
feature at no cost to the FBI if requested. (U) 


- 12 - 




I 


Memorandum to Mr. 

Re: MINIATURE TAPE RECORDERS 



The contract does not specify that the playback unit 
have level meters. The advantages of having level meters were 
discussed. Peak meters having a range of 43 dB as used on the 
Nagra Model TRVR recorder are the best available. Kudelski , S.A., 
agreed to add these meters to the PU-1 playback at no cost to 
the FBI if requested. (U) 

Since the Nagra JBR recorder will be concealed, it nay 
record tapes at low volume. During playback, large amounts of 
gain may be required. It was proposed to have playback level 
controls with a range of -40 to +40 dB. This feature (gain) 
will require expensive amplifiers to amplify low-level tapes. 
Kudelski, S.A., agreed to add this feature at no cost to the FBI 
if requested. (U) 

Since the FBI must duplicate thousands of Nagra tape 
recordings, ways of Using the PU-1 as a high-speed playback Unit 
were addressed. This feature is not specified in the contract. 

It was decided to make the PU-1 playback at four times real time. 
This Will reduce to 1/4 the tlme.,reqUired to duplicate a Nagra 
tape recording. Kudelski^ S.A.'y j agreed to add this feature at 
no cost to the FBI if requestefdT^ The PU-1 must generate a start 
signal to activate the recorder that will make the duplicate tape. 
Kudelski, S.A.# agreed to add this feature at no cost to the FBI 
if requested. (U) 

Since the FBI has digital processing equipment that may 
be. clocked by the tachynetrical signal, it will be necessary to 
have a tachynetrical signal output. Kudelski, S.A., agreed to 
add the feature at no cost to the FBI if requested. (U) 

As recorded above, significant improvements are being 
prepared for the Nagra Model JBR recorder and the Nagra Model PU-1 
Playback Unit. 


i 

i 

j 

I 


I 




■ ( t;; % . ■ Xrt* * '■ 

* + *“ I (*■•?! i' U 1, <• * 


i 



- 13 - 



I'm 


i 




V* 

8941 S WSH 


2^398 NA6RA CH 


1 « S) » l < 


* i\ 

,,,, 

**Ll . i ; t 


- i j %‘jipt, 

> »vl\/ .1 '* <=»• ■<»< J { * j, ,$ 


KUDELSKI SA CHESEAUX 


1*10. 88 TX NR 3375 


IS IT THE FBI 


3 



ATTN. 


TECHNICAL SERVICES 


PRESENT OAY SITUATION ON JBR PROJECT: 


I , RECORDER TARE TRANSPORT.; PLAYBACK TAPE TRANSPORT ANO 
PLAYBACK ELECTRONICS ARE OONF. 

ENCLOSURE 



2. NOW COMPLETE SYSTEM MUST BE SYNTHETIZED BY MR. KUDELSKI 
HIMSELF AND UNTIL THE END OF PHOTOKINA* HE WILL STILL BE 
COMPLETELY ABSORBED BY- THE AMPEX NAGRA VPR 5. THIS PRODUCT 
WAS EXHIBITED AT IBC AND MR. KODELSKI PLANS TO SYNTHETIZE 
THE J8R IN THE 4 WEEKS FOLLOWING PHOTOKINA. 

3t UNTIL NOW, 4 IMPORTANT TECHNOLOGIES WERE DEVELOPED: 

-A. VAPOR PHASE SOLDERED CHIPS ON FLEXIBLE BOARD PACKAGING. 
THIS TECHNOLOGY, COMMON TO JBR AND VPR S WAS QUITE 
DIFFICULT TO ESTABLISH AS ALL PRODUCTION EQUIPMENT BOUGHT 
FOR THIS PURPOSE WAS EXTREMELY NEW AND NOT REALLY DEBUGGED. 
PRESENTLY, EVERYTHING WORKS, THE LAST PROBLEM, NAMELY 
SOLDERING QUALITY OF SOT IC'S (PHILIPS, MOTOROLAAND 
IN THE FUTURE NATIONAL) WILL BE‘ SOLVED VERY SOON. 

1 t 

B. WE ESTABLISHED* A TECHNOLOGY FOR USING 70/75 ALLOY 

J* 

, (MILLING, STABILIZING, CORROSION PROTECTING AND GROUNDING >•: 

C. TO ENTER INTO JBR DIMENSIONS, WE DEVELOPED A NEW HEAD 
CONSTRUCTION USING BAND METAL ELASTICITY FOR FASTENING HALF 
HEADS ♦ 


* * 





t 



0. WE THINK WE HAVE OVERCOME CONSTRUCTION PROBLEMS/ THIS 
UNDER CONFIRMATION OF FINAL TESTS. 

YOU MAY THUS NOTICE THAT THE TIME AND EFFORT SPENT UPON OUR 

< t l 

VIDEO PROJECT IS THAT MUCH THAT WE WILL SPARE IN THE COMING 
MONTHS ON THE JBR. 

WE WILL OF COURSE BE VERY GLAD TO WELCOME. YOU ON OCTOBER L 13/ 
BUT WE FEEL THAT MORE COULD BE ACCOMPLISHED IF YOU COULO 
CONSIDER C0MIN6 LATER/' IN ROUGHLY MID NOVEMBER. 

WITH MY BEST RE6ARDS 


b6 

; 1 b7C 

MARKETING DIRECTOR v 

's 

A 

t * 

~m ' 

8*392 NA6RA CH** 


123* 10/01 

PLS REPLY VIA TRT 



KT 





Memorandum 


or* 

k- 


Subject 


Mr. ; Bayse 


, jvojv 


D»‘« 12/27/82 



CNIATURE TAPE RECORDERS 


<£> f , 


CiM AG.A4-. 

1 tn«< AO U»« ■ 

Kmc AD US — ^ 
Ant.Dlrj 
A4«. S*rr». ■ 

Crl». !•»« V 

■ —i 

U9«!L 

L«t._ 

L«f«S C«w» ■— : 
Off. C«*t. A 
r«vn« ak*._ 

*♦€. Mf*t. 

T*«W. Sfv>«- i-. 

T»l#»l> » < x Ri> — i; 
OtrKtw'i S#«‘y — : 




REFERENCE t By memorandum R. W.: Witzel to Mr. Bayse dated April 18, 1980, captioned 
as above, the FBI contracted to procure 95 Nagra Model JBR recorders and 
.Model PU-1 playbacks. 

PURPOSE:.- To report and place on record the results of the second contract monitoring 
trip on FBI Contract #J-FRI-8020. 

SYNOPSIS:- From No vember 30 to December- 3, 19 82, SA's l l and 

I I met with contract representatives and reviewed the. progress of b6 

FBI Contract #J-FBI-8020. The following .improvements to the .recorder are being b7c 
recommended. 

.1. Establish the speed of -the tape by measuring the RPM of the take-up 
spindle. 

2. Utilize a tape cartridge instead of tape pancakes. - 

3. Increase the speed of the recorder to 15/10 inches pe r seco nd, reducing 
specified record time by 8 minutes (2 hours 22 minyteS^ "N 

4. Design a special recorder bias shielding top*r . J 

r Utilize three size "N" batteries.: f 

Provide a way of installing the batteries withou^removing the bottom 
of the recorder. 

___ Utilize a new gear tooth design to reduce drive motor noise. 


1 -• Mr. O'Malley' 

1 Mr., Revell 
1 - - Mr . Bay s e 

i H 

Attn: : Mr. Chapin 
1 -■ Mr. Witzel 
1 

1 - 

1. 

JBR:jmh (9) 

J 198 d 


a * a 7$/^ &SO 


10 J|\N 14 B83 , 


(CONTINUED OVER) 



Witzel to Bayse Memo 

RE:i MINIATURE TAPE -RECORDERS 


The specification of the; playback, unit, should' be; changed to require; the, 
.playback of .a tape cartridge and. the addition of a tape counter. 

Since delivery is being delayed, the company will be 'required to submit 
bi-weekly status ,reports. and work overtime to .reduce the; delay. Delivery of ten 
recorders >is; scheduled for July, .1983,- 'remaining units 'by the ■ end of -1983. By 
changing recorder’ speed to 15/16 inches 'per second, ^recorded, tapes may be played 
on. existing FBI inventory' of larger Nagra recorders with. an. increase in wow and. 
flutter.- When the playback; units; are delivered, the, tapes can. then be. played, with 
the wow and most, flutter canceled. Delivery' of -recorders is. being" accented.; 
.Production, of the playback; to proceed only when it does not impact On recorder 
delivery.; 


.RECOMMENDATIONS:- l. : 



That. the. listed improvements, to. the. Nagra -Model. JBR. recorder 
ibe. approved .; 


APPROVED: AdflV.Scrv*-- 

Ctto. ‘itiv, , 

DiTCvt * f L , , , — . 

Exec. AD-AA.- K 

E xec.A2Kv/. - 

Exoc.AO-C£S ■— -•* 


Laboratory^ . 
Locot Couft. 
CS. oJ Cone. 

, & PuSfc t-fc- 


Rcc. f.'GrtJ. , 
Tech, Serve. 
TfAWno . ... 




2. That 

approved. 



the" listed .improvements to; -the" Nagra Mbdei. PU-1. playback; be; 


APPROVED: Adm.Servs^ 

Crlm, 3rrv, __ 

Director 

Exec, AD-A&t l tdrht. 

Excc< AD-Inv. 

Exoc. AD-l£S - lr»W. . 


laboratory^ 

logafCoun. 


Off.ofC#ng. 

& Pvttic Aff$. 

Bcc.Mgnt . 

Tech. Scrvs . 0^3 A? ^> 
Tuning . 


S. That. the. delivery date" be rescheduled, as listed, on attached 
•production., chart.; (10' units July 1983,- remaining' units by end. of 1983 ) • 



APPROVED: Artn. Serve. 

Crm, Jr»v. _ 

Director 

Exte. AO-Actot. Vijct. 

Extc. AO-Srrv. . !otpsct«on_ 

Exec.AO-LES loteS. 


Laboratory 
Local Cour*. __ 
Off. Ol Cor>c. 

& Pubic Aits. 


Roc. Went, j 

Tech. Servs. 

Trailing 




Witzel to -Bayse Memo 

-RE:. .MINIATURE TAPE • RECORDERS. 


^ DETAILS :- By sole source. negotiated ^contract / number J-FBI-8020, -the FBI contracted’ 
‘.with - Nagra Magnetic -.Recorders , . 'Inc . New York, . ’ New.York,-- to 'procure: .95 
Nagra, Mb del JBR. Miniature: Stereo, tape recorders, 95 Nagra Model PU-1 Playback Units 
and three. Nagra Model TBEC .Time 'Base .'Error Corrector Units at /a. total price, of 
'738,302.68 Swiss. Francs.-. .Nagra recording equipment vis developed/and manufactured 
by -Kudelski ,- S/A. , .Lausanne, Switzerland. 


,By.' memorandum . dated; November .23/ ,1982, captioned '.'Miniature 1 Tape, -Recor ders , " 
it .was approved > for Contracting Of ficer's , Teohnicai'‘ RepreSentative.- SA_ \ I b6 


and. Assistant; Section .Chief 


£ 


land,. -.to -review the .progress .on; this .contract.. 


, to travel'to ^Lausanne, , 1 Swi.t zer-b7c 


and 


From Novemb er 90. 1982 r to December 3,..1982, SA , s 


I 


Foie 


met with; the. following officials, 'of ’ Nagra Magnetic. Recorders, 
,Ihc. ,v and Kudelski, S.A., in Lausanne, Switzerland:; 


1 . 


Stefan- Kudelski,- President .and- owner of 
Kudelski, S/A., -Lausanne > Switzerland’, 


2 . 


3, 


4-: 


■$< 


6 .; 


.7, 


and, as needed,- numerous other engineers and. projects managers to* discuss specific 
problems., .The; objectives of these' ‘meetings -.were: to- produce the very best recording, 
playback, duplication and • enhancing system. possible; and to. expedite production; and. 
delivery. As 'this memorandum will record, numerous -steps were: taken to meet these, 
objectives, but a future meeting(s) is required to insure this; project .meets ^pro- 
duction, and. delivery schedule. 


- 3 - 


(continued; - .over). 



Witzel to Bayse Memo 

RE:- MINIATURE TAPE RECORDERS 


NAGRA MODEL SNST RECORDER 


The FBI presently uses the Nagra Model SNST Stereo Tape Recorder and. 
the first discussi ons cent ered on any operational . or technical problems with 
this recorder. SA | ~| is the project manager for this -recorder. Usage of b6 
these, recorders establishes that if -installed within 12 inches of our body b7( 

transmitter, the audio of the Nagra recorder can be. distorted by the RF energy 
of the body transmitter. RF filters and additional grounding at the; input 
connectors eliminate, this problem. A. retrofit kit will be developed that can 
be installed in existing Nagra Model SNST recorders. 

Several companies are presently manufacturing, and marketing tape 
recorder bias detectors. Ways of reducing bias emission were discussed.. Special 
shielding will be provided to reduce, the. Nagra Model SNST -recorder bias, emission,. 

■ NAGRA - MODEL JBR .RECORDER , 

A working mechanical, model of this recorder was analyzed and tested. 

The following improvements are being. recommended: 

1. -This recorder establishes its tape time speed by measuring the 
diameter of the supply reel with a wiper arm. The wiper arm pressing 
against the, tape causes the. last loop of tape on the" supply reel to 
loosen, and. develop a slight ripple at the point of contact. This 

is not satisfactory. Way's" of correcting the problem were addressed.- 
By removing the. wiper arm and counting the revolutions of the take- 
up reel, -which will be converted, to linear tape speed, a significant 
improvement in speed consistency' and accuracy will be obtained and 
the tape ride-up characteristic eliminated. This represents a 
significant improvement and should be incorporated in this recorder. 

2. Loading the. recorder with tape requires a. person with a high degree 
of dexterity. This is unsatisfactory because tape loading in the 
field. would be difficult. at best. Ways of producing a loading jig 
were addressed but proved unsatisfactory. A way of encasing the 
cassette tape in a. cartridge were reviewed and selected as the best 
way to facilitate loading, 

3 . The speed of the recorder is specified as approximately 3/4 inches 
per second. By increasing the speed,to, 15/16 inches per second, the; 
following improvements will occur.:; 


-4 - 


(CONTINUED - OVER) 



Witzel to Bay's e Memo 

RE:- MINIATURE TAPE RECORDERS 


a. The frequency response will increase. 

b. The signal- to-noise ratio will improve. 

c. Wow and flutter will be reduced. 

d. Recorded 'tapes may be played on standard SNST recorders. 

The only drawback to this change is • that recording time will be 
reduced, to 2 hours and 22 minutes.; The contract specifies at least 
2 .1/2 hours. The 'improvements greatly outweigh the $, minute, reduction 
in. recording time and should be approved.; 

4. Ways of further reducing' or eliminating tape recorder bias radiation 
were addressed. A top made of special magnetic shielding metal 
will be made for use when investigative circumstances indicate that 
detection equipment nay be. Utilized. This top unit will be slightly 
‘thicker than the standard top and will not contain, a window for 
viewing tape movement . 

5. The present contract specified 4 size "N" batteries. Tests of the 
recorder electronic components ’ indicates that 3 size "N" batteries 
will, be sufficient to power the recorder. This will, provide 
additional space for the electronics and should be approved. 

6. The present design requires that the bottom cover be removed to 
change the batteries. The electronics of the, recorder will be 
exposed during this operation and may be damaged by an inexperienced 
operator. Ways of changing batteries without, removing the ’bottom, 
cover were addressed. , It was decided that placing -the 3 size. "N" 
cells in a straignt line along one side would be. the best. In 

this configuration, only a battery compartment cap would, heed to 
be removed, to install batteries. In. addition, this design would 
allow the. later construction, of a 4 • 5-28 vdc power converter that, 
would ( be. the same size as the 3 size M N n cells and fit into the 
.recorder battery compartment.. This would allow the. recorder to be 
powered by the battery of an automobile, plane, and/or other sources. 

7. The main drive motor of the recorder was subjected to tests to 
determine its torque and noise generation. This motor has gears that 
were designed at KUdelski, S.A. , that have a different shape, selected 
specifically to .reduce gear mesh noise. This shape completely 
solved the problem of motor noise. The new, design will be utilized 

in this recorder. The torque of the motor was tested and. it greatly 
exceeded, the torque required to transport the tape. An examination 
of the jewel bearings disclosed that a slight redesign would greatly 
improve their ability to sustain, shock. This redesign will be 
incorporated. 


- 5 


(CONTINUED -: OVER) 


Wi.tzel to Bayse Memo 

RE:- MINIATURE TAPE RECORDERS; 


* 


< 


PLAYBACK UNIT 


Since it is being recommended that : the .recorder utilize a cartridge, then 
the. playback unit will be required to faithfully reproduce these cartridges meeting 
Or exceeding .all specifications listed in this contract. Webs will not be required 
to be provided since they will not be needed. 

The contract does not require a counter, but contact with many of the 
technical agents clearly indicates that a counter will be needed for transcription 
and courtroom playback functions. Kudelski agreed to add a counter to the playback 
unit, if requested. 


DELIVERY 

The present contract delivery date is the; end of November,, 1982. The 
problem of delayed delivery was aggressively addressed. The FBI requested that a 
detailed production. schedule be developed; that Kudelski, S.A., forward a bi-weekly 
status report to include if production. is on, behind Or ahead of each scheduled 
deadline, significant accomplishm ents and anv f orseeable events that may impact, the; 
new scheduled, delivery. .date; that l ~~| production manager, be designed as b6 

the company official to forward, the status reports; and that the company place key b7c 
project personnel in an overtime , status to expedite, delivery. 

The delivery .delay is undesirable, but an -analysis of 'the company's 
willingness to devote full resources, including overtime, to shorten their delay is 
reasonable. In. mid 1982 when the FBI- actively advertised its need for small recorders 
only Nagra Magnetic Recorders responded .with a 'bid. In short, the FBI does not 
know of any other manufacturers that could produce 10* recorders by the end of July, 
1983, and the remaining recorders by the end of 1983. 

Since -this is a fixed price contract, the delay is costing the manufacturer 
additional funding .which cannot., be passed onto - the. FBI. Therefore, the Company has 
an interest in completing the contract .as quickly as possible. 

By changing the' recording speed to . lVi& inches per second, recorded 
tapes may be played on existing FBI inventory of Nagra recorders with an increase 
in wow. and. flutter.; But when the 'playback becomes available, the original tapes 
may be reviewed with the wow; and flutter canceled. Production of playbacks will 
proceed ahead only when it does not .impact on the production of the recorders. 


Based on concessions made, by the company, to improve the recorder and 
playback' units and their willingness to place key personnel in Overtime at no 
cost, to -the FBI, it is being recommended that the FBI agree to the new delivery 
schedule . ( Copy attached ) .- 

Enclosure; 


6 











r 


Memorandum W 




to : Mr Baysev' “ l ^(r- 
>* : R Wt, jifijcfe-el 

K ».'** i, 

Subjctf : LIAISON WITH! 


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Cf»». Uv, , m 

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J tom 



V«t. - 

w,te January 13, 1983 — 

Oil. & 
fvVfn; Af#«, 

R M , MftM. u j- __ — - — 

TuK, $*ry», M... 
Tr«t*tAf — 

T«l«pV»n« ft m'. ^ 

0 **<♦♦/• S«cV 


v?d£/e 



REFERENCE : : By memorandum R. : W. Witzel to Mr.; Baysedated November 

23, 1 982, captioned "Mi nia ture Tape Recorde rs r " it. was; 


approved for SA.’s[ 

Lausanne , Switzerland , 


]and 


to travel to; 


PURPOSE :■ To. record and place on. record liaison contact with the 
Swiss Federal Military. 


DETAILS : On the e vening of November 29, 1982, SAf 
met with! 


RECOMMENDATION^ None.; For information only. 


1 Mr. O’Malley 
1 - Mr .; Bayse 
1 Mr. Witzel 

1 \ 

1 - Mr. Killio 
1 Mr. Woods 


"k 


so 


4WIAK TM3 


JBR': apb (8) 

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8-268 (Rev. 9-1-82) 



FEDERAL BUREAU OF INVESTIGATION 
WASHINGTON/ D.C. 20535 


i"TE 


Date: 


1 / 13/23 

clkyslakl 

: Mk\ 


MIC CUt 
ATTK 


To: 

Attn: 

FBI File # *^1 


TECHNICAL EQUIPMENT SHIPPED FOR 

TEMPORARY ASSIGNMENT 


RE: cr Taletyp da tad 1 / 11/83 


Invoice of Contents 


1 mm ch 7401 -M dialed 
a« iocs nr ooi «#343 
1 Meh docwwttatiw 


KtKbtr display mmlt 


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DOCUMENTATION DATA Bfk] 
SECTION/UNIT COST CODE 

SHIPMENT AUTHORIZED 
SHIPME 

NUMBER OF CAR' 



ENGINEERING SECTION ROOM 1B046 (TELELTFT 253) 
INVOICE , 1215 

EXTENSION 
SHIP VIA 


33S7 »i a»U ee- 


llr fni|ht 

ENGINEERING SHIPPING # 


BUREAU FILE 



,.v, 

•> f 


Memorandum 






Ck«« AO A^m. 
Ck*< AD lav. . 

AD IC$, 
A$*t« Dir. i 
A4m. $«rv*. 

Cf lm« l*v«> 
!**>. ~ 


To : Mr . Boyd 


$D 


Date April 14, 1983 


■« 

UK* 



tzel. 


/&. 



NIATDRE TAPE ; RECORDERS 





U(«l H 
Off. C#*«' * 
f*VlU AfU.« 
R««. *** 

T*<%. $«rvs._ 

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TfUpWv* Rm. — 
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REFERENCES:- 1) By memorandum R. W. Witzel to Mr. -Bayse -dated 
“ — A pri3; 13, 198O, captioned as above, the FBI contracted 

to procure 95 Nagra Miniature Recorders/Playbacks.; 

, 2) Memorandum R. W. Witzel to Mr. Bayse dated December 
27, 1982,. captioned as above reporting the results of the second 
on-site contract monitoring trip and. advising a future contract 
monitoring trip(s) would be required to insure this project, meets 
production’ and delivery schedule.; 

PURPOSE: To recom mend that Electronic Engineer (EE) 


nd Special Agent (SA) 


travel to 


Lausanne, Switzerland, to review 1 contractor's progress, to determine 
if the, prototype unit meets specifications, and. to determine if the 
production/delivery schedule is. being met., 

SYNOPSIS: The FBI. has contracted to procure; 95 miniature recorder^; 

playbacks at a cost of $370,000. Mr* Stefan. Kudelski,,/ 
President of Nagra, Lausanne, Switzerland, has advised that .the T 
breadboard recorder is available; for testing by the ^BI and has oSiiS- 
quested t hat thes e test s be conducted fr om April 26, 1983 to April 28, v 
1983. ee[_ land. SAl |have different, areas of * — 

expertise, 



Both will be required to adequately test and analyze b7c 

this recorder. The FBI has an immediate need for these recorders and 
has taken many steps to expedite production/ delivery .; The. on-site, 
inspection is required to maintaih the; present production/delivs 
schedule. Total travel Costs will be > $3; 9 00.. y 

, , v-104 tSML. , ... , 

RECOMMENDATION:; That EE I l and. SAl _ . _ ~ I I be aythbrifced. 

to travel to Lausanne* Switzerland^^ to monitor 

FBI contract 
$3,900.; 


O-i MAY 10 19 . 


1 - 
1 - 
i; - 

1 - 



Total travel expenses will, be approximately 

Adm.ScrVS. Labcuta v - v -. - 

Legs) Coon. _____ 

Off. of Cong. \ 


Grim. Jnv. , 


Wen 
inspection,. 


* PiAtic Arts. 

Roc, Mgnt __ r __ 
Toch, Servs. 

Trains 


APR 21 1983 


Groover.' 
Boyd 

.(contract 8020/ 
Mr. Witzel 


JBR:apb (8) 

■ °r 


r 






Memorandum. :R . W;. Wit zel to Mr Boyd" 

RE: Miniature .Tape; Recorders./ 

DETAILS : Based on referenced memorandum. dated April 18 , 1980, the 

FBI issued a; sole source negotiated /contract .to Nagra 
Magnetic Recorders, Inc. , New- York,. New, York, to procure 95 ^Miniature 
Recorders /Playbacks at a total 5 cost, of $370,000. Nagra recorders 
are developed and built by.Kudelski, S.A., Lausanne, Switzerland. 

Mr. ; Stefan Kudelski, President of Kudelski, has advised that the 
breadboard.recorder is ready, for FBI review and analysis i to determine 
if :it meets all sepcifications.; Since the recorder is in the 
breadboard , stage it cannot ’be (forwarded to FBIHQ for review. At .the 1 
breadboard stage, any ; necessary: changes could be made at minimum 
expense to Kudelski and/or the FBI.. In addition,, changes made at , 
this time will have minimum impact on scheduled delivery. Mr. Kudelski 
has requested thflJthis review be conducted from April; 26 - April. 28, 
1983. 


EE I knd SA l I must travel to the factory: 

in Lausanne,; Switzerland, to test this new recorder and accurately 
determine if the projected pro duct ion /delivery; schedule can be met. 
Th is revie w will; require many areas of expertise 'and work experience. 
EE l I has expertise in technical contract monitoring, audio 

acoustic work.., hybrid c ircuit technolpgy, and thick and: thin film 
.technology . SA l I Is the Contracting Of ficer: Technical Represent- 

ative (COTR), and has expertise in designing miniature recorders,, in 
digital signal processing, in security/countermeasures and in 
investigative ‘acoustic environments. All of these areas of. expertise, 
are heeded to successfully review the. development, of this recorder. 

The per diem :rate in Switzerland is $86. . The economy round-trip 
air fare to Geneva, Switzerland.is $1,343/ per person. 

The above action has f'mHinaifid with Administrative 

Services Division and. Special Agenl| [of the Technical 

Services (Division., 


- 2 - 


b6 

b7C 



8-269 (Rev. 9-1-82) 


# * 

FEDE1 


DERAL BUREAU OF INVESTIGATION 
WASHINGTON, D.C. 20535 


m 


\ " 


Dates 
To: . 


4/26/83 
NSW YC M 


TECHNICAL* EQUIPMENT SHIPPED FOR 

PERMANENT ASSIGNMENT 


Attn: 


RE: TECH* EQUIP 


FBI File # 83.791 


Invoice of Contents 


1 ea. GOULD a AO line conditioner 
PN-532814, XBNX SN-21111 


b6 

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3oV\A>M'-t u- Tl'iMa 

G6L-src.oi3,n€ 

'*"***» 


Remarks: 


QCULD AC LINE .‘OXDZTXOVEa 10 BS USED WljlH CM 2211 call CALL 

DETAIL 3E;0 Sl&EH. WHEN KSL’ISVZD NOTIFY* 


FBI ACADEMY, TDS BLDG* 

QU ANTIC 0, VA 22135 


DOCUMENTATION DATA 


jap. 


SECTION/UNIT COST CODE 


-&i>5 


SHIPMENT AUTHORIZED HY. .^ 


SHIPMENT PAGKAGEJD^Y _| 
NUMBER OF CARTONS 


-xtrstti 


ENGINEERING SECTION ROOM 1B046 (TELELIFT 253) 

INVOICE i 1252 / 

month year 

EXTENSION 



- xm ’ 112*3357 


SHIP VIA 


ENGINEERING SHIPPING # 


Ss 


BUREAU FILE 



r 


8-269 (Rev. 9-1-82) 



• " • • 

FEDERAL BUREAU OF INVESTIGATION' 

*, WASHINGTON, D.C. 20535 



Date: 

To: 


4/26/83 

SAH JAAHOISCO 


TECHNICAL EQUIPMENT SHIPPED FOR 

PERMANENT ASSIGNMENT 


Attn: 


RE: tOOH. SQUI? 


FBI File # 8>7Ql 

. Invoice of Contents 


\ 


1 ea. G\;UL0 AC line c&ndifcioner 
PN-53231&J SN-21113 


b6 

b7C 

Um-Veci /\W\Jioes-^6-7d9as , 4^ 

De\vvered o^-Mcul| ^ 


Remarks: 


GOULD AO LIKE .OKDITIOKER TO BK USSD WITH CM2213 CALL ITJJIAIL 
SEC0BD2R, KEEK E2CIEVSD K0T1FT i I j 

>BI A '- Ab'^I, TLS BLba 
QU?JfTICO, VA 22135 


DOCUMENTATION DATA 
SECTION/UNIT COST CODE 





ENGINEERING SECTION ROOM 1B046 (TELELIFT 253) 

INVOICE i 1251 / 

month year 


SHIPMENT AUTHORIZED B 

^ 5\\) \ 

SHIPMENT PACKAGE 


NUMBER OF 


ITONS 





EXTENSION 

SHIP VIA 

ENGINEERING SHIPPING # 


BUREAU FILE 






8-269 (Rev. 9-1-82) 


* • 

.T\ fede: 



// 


ERAL BUREAU OF INVESTIGATION 
WASHINGTON,. D.C. 20535 


Date: 4/26/83 

' 'i , i 

To: LOS ANGELES 


*Ss;. 


TECHNICAL EQUIPMENT' SHIPPED FOR 

PERMANENT ASSIGNMENT 


Attn: 


RE* TECH. EQUIP- 


FBI Pile # 80-^1 


A 1 


Invoice of Contents 


12 ea. GOULD AC line conditioner 
PH-532813 * SN-21110 
”532815, 21H2 


« 1 


b6 

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awXAeA A\rWs -A&-7GTfas3i 

U-7*U3I 

be\ v > vereA oaj - Ma^ i<* 8 5 


Remarks: 


GOULD AC LINE CONDITIONER TO BE, USED W ITH 0H221Q C ALL DETAIL 
RECORDER, WHEN RECIEVED NOTIFY: I I 

FBI ACADEMY, IDS BLDG. 

QU ANTIC 0, VA. 22135 


DOCUMENTATION DATA 


■frfb- 


\ SECTION/UNIT' COST CODE 

I ' " ' ' 'N. \ 

\l X 


ENGINEERING; SECTION- ROOM! 1B046 (TELELIFT253) 


-33 -55 - 


invoice; #: 


1253 . 


month^year 


SHIPMENT AUTHORIZED BY 


J li 


SHIPMENT PACKAGED 'BYaCH 


number -op (Bartons 



EXTENSION 


SHIP VIA 


- 1 15 - 3357 




TUA" 


ENGINEERING SHIPPING! #? 


BUREAU FILE 



8-269 (Rev. 9-1-82) 


• m 

FEDE] 


FEDERAL BUREAU OF INVESTIGATION 
WASHINGTON, D.C. 20535 


• • 


*,* 


Date: 

$4/26/83 


TECHNICAL EQUIPMENT SHIPPED FOR 

To: 

■* 

PERMANENT ASSIGNMENT 

HI AGO 


# 

RE: a j;ux i x - / 

Attn: 




FBI File 

* ' Invoice of Contents 


1 SA, GwUld A'J line conditioner 
?N-5323l8, SN-21115 


b6 

b7C 

ZaM-Vop 

ZSbVvMv\X| 0-1 

OeUvered — 3^ \ c \%b 


Remarks: 


GOULD AC LINE lONDITIONftt TO BE USED WITH K2213 i, ALL DETAIL 
EE-ORDSR. WHEN NSCXfiVSD NOTIFY : l I 

A14S3HY, TUS BLDG. 
QUANTICD, VA 22135 


DOCUMENTATION DATA 




ENGINEERING SECTION ROOM 1B046 (TELELIFT 253) 


SECTION/UNIT COST CODE 

SHIPMENT AUTHORIZED BY 

* 

SHIPMENT PACKAGED BY 
NUMBER OF CARTONS » 







INVOICE #_ 

EXTENSION 
SHIP VIA 


1254 


month^ year 




ENGINEERING SHIPPING # 


BBMAY uTabd 


BUREAU FILE 



•« 

8-269 (Rev. 9-1-82) 


# m m 

FEDERAL BUREAU OF INVESTIGATION 
WASHINGTON, D.C. 20535 


^ * . 


Date: £ 3 / 23/83 

To: Cfcioac* 

Attn: 


TECHNICAL EQUIPMENT SHIPPED FOR 

PERMANENT ASSIGNMENT 


FBI File # 




RE: Mil. Ipip, 

Invoice of Contents 


a «22*i Coiltir0Ul>r » F*~**34or»30f#4« 


b6 

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Remarks: 


XQ0UWWT IS KKI1VD. 






DOCUMENTATION DATA 
SECTION/UNIT COST CODE 


SHIPMENT AUTHORIZED BY 


SHIPMENT PACKAGED [BY 

\\ 

NUMBER OF CARTONS^: . 




ENGINEERING SECTION ROOM 1B0 4 6 (TELELIFT 253) 


INVOICE f 


12? 6 


» e / 

“ month year 



EXTENSION 
SHIP VIA 


e 45 198& 




P.O. 

ENGINEERING ‘SHIPPING # 


BUREAU FILE 





\ '/ 

8-268 (Rev. 9-X-82) 


31 




gM * 


Date: 


3 / 19/83 


To: 

Attn: 

FBI File # 


SAC Da trail 
Attar SA| 


> ✓ 


RAL. BUREAU OF :INVESTIGATI 
WASHINGTON, D.C. 20535 





+: 


TECHNICAL EQUIPMENT SHIPPED FOR 

TEMPORARY ASSIGNMENT 


RE: Tackaical SfttlpMttt 


80*781 


/ 


Invoice of Contents 


1 Mush Tin* Mte te*« a«nk nlt Mtol . MH » MOM Mm 0 0053*3*0 
1 atek imto eartMU tor M»k nit «•*« "• 

1 each taekalctl iiwitl 


\ 


b6 

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8-269 (Rev. 9-1-82) 


FEDERAL BUREAU OF INVESTIGATION 



•WASHINGTON, D.C. 20535 


Date: 3 / 15/13 

To: SAC IfO 

Atta: 8A 

Attn: 


TECHNICAL EQUIPMENT SHIPPED FOR 

PERMANENT ASSIGNMENT 

RE: Tacfcaical XfiipaMt 


FBI File 


Invoice of Contents 


1 nek Baataa utek Anti M S3L n N 


b6 

b7C 



DOCUMENTATION DATA 


SECTION/UNIT COST CODE 


SHIPMENT AUTHORIZED BY 
SHIPMENT PACKAGED BY 



NUMBER O 


SR OF -C 

?! 


TONS 




ENGINEERING SECTION ROOM 1B046 (TELELIFT 253) 



INVOICE 


EXTENSION 


SHIP VIA 


month year 


ENGINEERING SHIPPING # Q? |< 

BUREAU FILE 



8-269 (Rev. 9-1-82) 


FEDERAL BUREAU OF INVESTIGATION 
WASHINGTON, D.C. 20535 


1 


Date: S/29/85 
To: CHICAGO l 


if*" 


TECHNICAL EQUIPMENT SHIPPED FOR 

PERMANENT ASSIGNMENT 


Attn: 


RE: TECH EQUIP 


FBI File # 80*781 


Invoice of Contents 


ii«t mi mat 
9* ♦ Ml p Aril | AM 




Remarks: 


r* ^3 »>o 

-n „ >£c 

*' 1 '* -** 5 

X & 


Fa- 93°! 23*n9i 

cv-i — I ^ -3T 


DOCUMENTATION DATA 


SECTION/UNIT COST CODE 


SHIPMENT AUTHORIZED BY 


SHIPMENT PACKAGED BY 
NUMBER Otfj C^$6tob 


0885 


ENGINEERING SECTION ROOM 1B046 (TELELTFT 253) 

INVOICE # 7692 s / 8 ! 



EXTENSION 


SHIP VIA 


5 / 85 

month year 


ENGINEERING SHIPPING # 


BUREAU FILE 



8-269 (Rev. 9-1-82) 


-FEDERAL BUREAU OF INVESTIGATION 
^-WASHINGTON, DiC. 20535 


Date: 1/18/84 
Tos HOUSTON 


TECHNICAL EQUIPMENT SHIPPED FOR* 

PERMANENT ASSIGNMENT 


Attns 


TECH EQUIP 


FBI File # 


80 - 7^1 


. Invoice of Contents'. 


6 ea. 100? EXTENDERS- 06209 

5654 

05827 

O5856 

06315 

5621 





w*1 


Remarks; 


WHEN EQUIPMENT IS RECEIVED PLEASE RETURN PACKING SLIP TO; 

FBI ACADEMY 
TDS BLDG 
QUANTICO, VA 

ATTN: I I 


DOCUMENTATION DATA __ 

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Attn: 


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64NQV151S83 


BUREAU FILE 






STANDARD FORM NO. 64 


V\ 


Office Wlemorandum 


TO 


FROM 


SUBJECT: 


Mr. ffar'bpf 


I. 


I 


< sf&krt 



UNITED STATES GOVERNMENT 


date: September 18. 1952 


rad 


RFMT COUNTERMEASURES 


JUNE 


with the installation of RFMT counter - 


In connection 

measures on telephones of certain go vernment officials the 
following method was devised by Special Agents R, L. Stevenson Tl 
and C . K. Corbett for shorting out the transmitter while the “ 

instrument is on the hook, without changing the switch hook 
or affecting the operation of the 500 A, b', C and D type Western 
Electric telephones . It should be pointed out that this change 
should not be employed on instruments used as the second party on 
message re gi ster service . Additional switch contacts will have to 
be employed in instances of this type of service . It is belie ved 
the indi viduals for whom the countermeasure wi 11 be instal led will 


Tolsrn 

Ladd 

Niche ls_ 
Belmont^ 

Clegg 

Qlavin 

Barbo 

Rosen 

Tracy_ 

Uohr 


that 


because of their importance in 
supplied with individual line 
reaui redi 


the official 
service. The 


irs of state 3 be 
fo Homing changes are 


1. Remove the slate wire from !, L2" and "A" and put 


o n 


fr pw r > 




Remove slate yellow from fl L2" and put on "I" 
no equaliser. 

Remove slate white from "C" and put on ”L2 


o r 


"B" if 


4. Put jumper from ”B" 
equaliser to "C ", 

Strap "L2" to "A 


5. 

6. 


i n 


nonequaliser or "L n if in 


Remove slate white from n B " in noneaualiser instrument 
or L" in equaliser instrument and put on N.C. binding 
post or tape end . 


y After the above alterations were completed the instrument 

was checked in the Laboratory and found to operate as a normal telephone 
instrument. 

ACTION 


file. 


None . This is an informative 


progress and should be sent 


to 


STANOARD form MO. 64 


t jet 


Office Memoranda 


TO : 

FROM : 
SUBJECT: 

SUMMARY’ 


Mr. Ear bo 
• «'• Conrad 




UNITED STATES GOVERNMENT 


DATE: Q q ff Q he T 2 7 £ Q N O 


i i r ip 
m.uIvmj 


feaWB-*®® IlWTAlT.mows 

'pigrM.mjumrn 500 n-ps ilismidi; t 

,/ '' 


A A/ d 


- Y , 


Tolscn 

Ladd 

Nichols__ 

Belffiont__ 

Clegg 

Ola vi n 

Harbo 

Rosen_ 

Tracy 

Moh r 

Tele, Rm. 

Nease 

Gandy 


CdT\ 2 '^O r q d 

determine al teTuUonstlTulr'eT aUthorised select tc 

Ripe instruments to various micr jU/j ap l ng p- estern Electric son 

bureau at present. details cnn'ffffff techniques employed iff +h e 

Required set forth herein ^ and ^noZuffa 

ffL ^ration and/or installation of Iff ,«! nt Z° eS not lend itself to 
techniques ; however 3 with ol+ern'-i ffffff ‘ d M areau 7flicro nhone-1;elevhonp 
can be obtained . 'era, ions outlined herein adequate ffoverale 

PURPOSE 


® report the comoleti nr> n - 3 -j-' 

SZiVai Taentl ZtVr? 

project „« ww tfUfeTuTfT O^/erllf . ffff »<• 


Pf f / ) LJTp 

•> U yiNG 


0 / which were repolfeT a R fF S° Untermeasur e$ , the resul- 

measures n \ 3 or} d a mi ^ , 0 dauea 9-13-32 cautioned v Typ i rrn n , 1 

i > > 3 u, ft.ii a -id i re <■•: zero n /? o ,© v? . 7 _ „ * ^ u 0 u at a n y 7 £ 7 o 

rlli C ciMo Sf remodel i ng required for D * ™itch\*) 

- -plication which application min h-~ lns ■■'fictions and Rwup \ \ 

1 bt vae subject of a s e wrote" memo 7~ 
DETAILS nemo, * 

V'f ' 


f^miJilCROPHO NE- TEL UPHOm TESTA L L .4 TION 


jS, 


i he fo 1 1 o ia i n g q h a n ges are rern / % r e a -c n ^ . rr 
instrument for a 4^,r. Ki c 900 ^ 

InllMOj^LUw - Briase Bin an r ' M > 


" her!l °ve o 1 a,c k r i n oe r ] e ad n m u n ft 

Place on "LI” onffettorl terminal. ter ^al and - 


'*30-781 

80-773 

80-760 

CKGtvrh 




>* 

0# 


•/,?, . J 




NOV 


'j 7%F 


Memorandum to Mr, Harbo 


10 - 39-52 


■y o n ne c t ~r rte 7/ e 7 7 a v? ?ivf 7 , „ - 

the "B"/ "u"' or" "W" on m °hhtinri cord to 

wire of the station mounting ccrltjTT “l“ e “««* 

■J or sets on e anal i per or / “ on equaliser 

1 «** 5 on seta without equaliser . 

yellow and black wires in the *+„+* 
one microphone leads* ‘ e ' a on mounting cord are 

The red and o reen vri «? ,*« 4.j 

telephone service lead's an*' Tn°T\ 0n mountin 3 cord are the 
12 . >> eaau a/l ~ 0,1 oe connected to ”Z2 " and 


D, 


'SLUiM. Line &e rvice 

to "R", 4% ;r n W' e o l n n n a efwo r°Tt-m°T j tation counting cord 
of the 5-wire station cord to "4 " * ne f th vire 

8 ^ e *™ 2i **r or ’’ B » on se ts withouVZtlZerd 

The 4th and 5th viiree n-p +h*> „j. , . 

microphone, leads. The red^ TTTT T° U ^ V * 9 °° rd are the 
station mounting co^d are tT he I ^ Ueilow wires of the 

terminals as the sane colors o f ThT^ ° n the 

cord » ' °J ''tie *.j-vnre station mounting 

^^M MOMOPHON E^ mfEPSONB INST A r.r.AVTnn 
-the following changes are required + o » ar n «r * 

instrument for a 3 -wire microphone Tm ? 6Ste rn Electric 500 tv roe 

vechrni_ que should no t be etllileTlnlAV T* instaI1 ^ion. This 
Rfl dgeci g L croji_s the line . ~ ~ “ bsc ri he_rfs rMnge_r is 

Remove the black rimer lead from n^n 

and place on " LI " on network terminal™ netmorlc terminal 
-install jumper from n T u nr n T” „ 

equaliser or "s'" with sets wThnm 9 ll , ser for Sets with an 
terminal. Install jumper from f" IT^LvC *° " a " ° n nei ™°r* 

The yellow wire in the s+n + in-r. - • 

connected to V on network termi^al!^ °° ^ should be 

^at?^ Cr S?Lfc^r re ^ yell ° W 9reen »ires of the 
points an%\f e ~foTl7ll^ to their us ^l 


3 ~ 



B 7710 VQtTKXXJjTfl to Mr . rf(XT*bO 


10~3'7~S3 


DE SWITCH, HOOK 
J ' le following alterations are reo-< inert +o 

jyve instrument for a DR switch hook r*-' nest ern Electric 500 

installation should he used on u i ■; 4 ^allati on. This time of 

desired and there ore mor^-^hnn ' 6 W/lere TLicronhone coverane is 

- /or *1 cro shone ToleZZ Toff, IZTTEUZeT iJ " 

Bridme li njye r 

remove slate i/ehZoio from "too - , 

»Ttt ,t D „ n .f ~ 5 1 0171 Ld on network terminal nn~ , 

<->7 1 t on equalizer for + ^ u J!! - out on 

sets without equaliser. ‘ ' ° “ th an equaliser or "8” wit, 

Remove slate white from n 7 " nn 7 . 

equaliser (if too short 5-5 equaliser or "B" or. sets witho, 
nr, n T ott ' , s.ioru tape end and conceal) nr, e n n n ; 1 

on 13 " on network terminal. -onceaij and ’0" and put 

Remove slate from. "LS" on r>o + 7 .,-„7 , 

network terminal . " ' terminal and out on n G ft on 

Remove slate from "A" on np+mnri- + • , 

network terminal. J * arminal ana put on "a" on 

- '>•*»’* *.r„^ 0 „ d pirt 

ierlinll'! UmPer '' £ *" netu,orl ‘ terminal to ” A " on network 

55f5 1 J Umpe / from " L " on equaliser of sets 

or 13 on sets without equalizer +o »% f! L 1 tn squalxser 

1 ‘■wK.er on network terminal. 

The yellow from the mountin'/ cord should h 

ana the black wire in the mountin'- cold connected to "7" 

70 terminals n RW ,f on the equalizer b * connected 

block. iL.Ooiie.ei o, tne handset terminal 

Ine yellow and black wir^s nu P +hs mv , 

art uae microphone leads. 

The red and green wires are connected tn +h ■ 

ana are for telephone service. USUal D °i^ts 

£. ‘C fEJl Tinp §cjpvi_ce 

Remove slate ue'llow c rn7r , tiy-nii . ,, 

on V or n B^o~ne q uaU Se /}or lets^'ZTl^ ter f nal out 
on sets without equaliser. an e ^o,Liser or ” 3 " 



v*. fit o v anauiu c o jj/ r t> f[a r b o 


10 -?* 


demove slate white Prow n ' nff ^ 

B" (if too short tane"°rh 'mum ana "L" or 

network terminal. “ conceal) and put on " Lg » on 

tie move slate from n J n arc] n r on nr , „ u , 

to 4th wire in stati Demounting co"?. *^*nd oonnect 


Install jumper from !, LS n to 


A on ne~ 


l : ?•"» j r> 7 

O t ■ j if 


1 n 8 t Cll 1 iuiRDPV f r*nm ?? r ft - . 

n- tin ft - • ^ Jer J 1 L on e Dualize r for s ^o Vli + h _ 7 . 

°' B on s ets without eaualiPPv +« 'hd ft t e!y ^liser 


on netwo] 


terminal 


on the equaliser 


on sets without equaliser to 

Connect 5th wire in mountina cord to 
or (she handset terminal block. 

The 4th and. 5th wires nf +h n „-i 

microphone leads. " ' 1 nation mounting cord are the 

connect to 

c J U1 telephone service. 

SPUT 

The following must be conole+pd in nr.w„ 

Western Electric 500 type instrument en 8° J eTaodel bhe network of a 
on a surveillance employing ' the" SPUT uni *** instrument ™V be used 

Di sco nne c t all 7^nWn ^ ^ , 

_ M J. 8 a a 8 U Q Yl P i:Wn t* It •» 7 i > 

holding network to telephone base ° ° Wi/ moun ~bing rivets 

itdtnThtl ne l work must be removed from, the ca-e - hi 

ls uone by bendma hark -him o c Ga ^ e » -this 

the network metal 9 casing'.^ ° limped h ps protruding above 

Ine complete network is then on-*- i n , . 

water to co ver approximately 3/4 0 r fh P m^+ a ) ner with s Hfficiem 

brought to a boiling Point or unt { 7 +1 mtal t casin 9 and the wa~ 

i-t possible to remove the p lrs fic L r t T\ ° 5 melted making 

CO well as the interno/1 oonoZfntPff fj 0ara f r the cetcori 

‘pofocios j 10 Til the metal casing. 

Z°"r°,°ft e . ti0n ° f the above « Jumper is placed Proa "an 
0£r a>uU( a J um P£f resistor fr* 07V ttntt + ' hr o~n~ r ? f %. * 

•f m ISO r. V. condenser in SP PPauj ft P A and “ 
concealed 

board . ' l -erneatn the network terminal 



(emorandum to Mr. ffarbo 


10 ■ 


99 * 


O .= 


When repotting the remodeled network Ocistone should be 
employed as a filler in Diace of the original sealing wax. 
lo conceal trie alterations a snail amount of the sealino 
wax should be installed in the hole in the center' 
plastic network cover. 


o r 


the 


zhi , network should be reinstalled on the telephone 

• if fie vji re s oe i ng co nne cted to the o ri oi no- 2 


base with 
do ints . 


all 


In order to complete the surveillance 


le operation and ins tail at; 


„ •; ~ - - - r v w v V V . V W ! VW {/ If {./ KMM f. Ur & U 0 71 

procedures previously outlined in detailed instructions to the field 
entitled ‘manual Reset Single-Pair Microphone -Telephone Kn it 1 ' should 
be followed. " " “ 


CONCLUSIONS 


Ihe Western .Electric 600 type telephone instrument represent 
an improvement in design and transmission Qualities over previous' 
instruments heretofore placed on the market by the telephone industry, 
r is obvious from, the foregoing alterations which are necessary to 

provide coverage desired as a present day investigative technic ue that 
this mstr ume nt does not "* 
installation. 


lend itself to ease of alteration and/or 


These experiments reveal the best microphone co verage toas 
oh Gained with 6 mi lli amperes of current flowing in the microphone 

current lower than this value microphone coverage was 
wi oh current exceeding this value the inherent carbon 
excessive in proportion to the increase in the area covered, 


circuit. For 
curtailed and 
"hiss’ 1 became 


For information only. No action required. 


ACTION 



f& O' 


STANDARD FORM NO. 64 


Office Memorandum 


UNITED STATES GOVERNMENT 


TO ; 
FROM ; 
SUBJECT: 


wr, a r oo (jj 

T u ' # Ff Q -r^ j* ff 

MICROPHONE^! 

rr " r \? T JPT) fr FTP": 


DATE: 



7 l l AM.d -7:,,i NAUe&hT MAU^k^. 

LJLi l/vc^ru, M.eA r , 

e Terence is made to my memo dated 10-27-52 re l 


• k e ah o v e - e n t i 1 1 e cl jug. . t ter * 


)£.i 1 .H..L LjO 


In co nnecti on wi th c 
vei llance Research” oddfo ved 
SA*a-R.I. Stevenson and 0. K* 
the R 1P VT unit on the 500 tune 


r p >? p ci r o n or o i e c m p r t i t 1 p t 
b y t h e Ex e a u i i v es Con fe r e n c 
0 o r h e t t e x u 1 o red t h e v o s s i h 
Re s ter n El ec trie te lev hone 
n tl u v el eased to the n u h 1 i a 


op e o 


lyoe instrument has been recently released to the public bv the hell Syste 

i 

It was determined that the RFMT unit will work on this time of 
instrument if a jumper is placed between " LI " on the network terminal 
board and "F" on the network terminal board or between n L2 !! on the networ. 
terminal board and "L !> on the equalizer or !, B n if no eoualiser is used. 
This jumper shorts out one of the switch contacts which is normally 
opened when the handset is resting on the cradle. A similar reaction has 
’ een experienced when the RFMT unit was employed on other Western Flectri( 


lephories whig 
on the cradle , 


broke both sides of the line 


is rests, no 


From the above it appears that the RFMT techniaue using present 
frequencies can be effective on telephone instruments which break both 
sides of the line ? only if o, jumper is employed in the telephone i ns tru— 
ment. The use of the RFMT unit would lose its value if alteration to the 
telephone instrument is reaui red before the unit, can be ins ta lie d. If 
access to the instrument is possible it ordinarily would be to the Pur ecu b 
advantage to use the SPMT unit as it does not have the high security 
classification presently ass ianed the RFMT unit . 


• \ PP f rp ?i r a ~n ~r r\ *r 

- if L UMjIt Glv U A j. 1 ON 



UNRECORDED COPY FIL05 



standard form no, 64 


# 


V 


Office Memorandum 


TO 


Mr. Tolson 



• UNITED STATES 

JUNE DATE: 


GOVERNMENT 

November 4, 1952 


from : Executives Conference 


SUBJECT: 





RAN 10 FREQUENCY MICROPHONE - 
TELEPHONE DEVICE 


, ff 

■ Anp P* \ |/c. 





On November 4 the Conference composed 
of Messrs , Ladd , G-lavin, Tracy , Mohr, Mason , 
Cearty, Rosen , Belmont and ffarbo was advised 
that the radio frequency microphone -tele phone 
unit devised by the Laboratory does not function 
on the new type of telephone instrument which 
has been recently released to the public due to 
minor differences in the electrical circuit. 



Tolscn 

Ladd 

Nlchols__ 
Belmont_ 
Clegg 


Glavin jg, 

Harbo_ 

Rosen 

Tracjr 

Mohr 



0 f 


i / V 


The Conference unanimously concurred in 
the Laboratory proposal that ten man days be au- 
thorised to conduct necessary experiments employ- 
ing higher radio frequencies to ascertain whether 
the RFMT unit can be modified so that it can be 
employed on the types of telephone instruments on 
which it will presently not operate successfully . 


cc - Mr. Mohr 
Mr . H. H. 
RTF: VH 


Cleg - 







'V 



standard FORM NO. 64 


Q 


, Office Memorandum 

TO : Mr. Ear bo 

from : J. jp. Co nr a 

Oj UBjECT : RFMT COUNTERMEASURES 

%4£2Ld-LLE...- U. th 



UNITED STATES GOVERNMENT 


date: December 16, 1952 


JUNE 



ToIam__ 

Ladd 

Nichols, 

Belmont, 

Cle gg 

,01avln__ 


Reference is made to memo dated 9-18-52 captioned as 
above and setting forth the changes necessary for the installation ^ 
of RFMT countermeasures on 500 type telephones. It has been »«.. 

determined that on the Western Electric 500D telephone wire 

color coaes and other changes reduce to a minimum the alterations ^ 

required to install a countermeasure . The changes are as follows; 


1. Remove slate from n L2 n and put on ”R n of the network , 

2. Remove slate yellow from "L2" and put on "C n of network. 

3. Remove slate brown from n C " network and out on ,! L2". 
Steps 4, 5 and 6 have been eliminated . 

ACTION 


None. This is an informative Bureau revort and should be sent 

to file . 


OKC ; vrh 




80-781 



f 

\§ 

•> v 

| 


iV 


y % 

r 



t\ 


iff 


0 


UNRECORDED COPY FILED Hi f J £j 



ETC&hfCWED FOHM HO, 64 




tJ 



UNITED STATES GOVERNMENT 


TO 


FROM t 


SUBJECT: 


Mr, Sarbo 


I. 


Conrad 



DATE? September 11 $ 

1953 


ToLL L / a S' Afiid 


I RADIO FREQUENCY MICROPHONE TELEPHONE 


JUNE 


) OcJ 


:? er 


X t* sfruL. A1 


, y 1 t> 


be 


conduct 10 «■» ■*«»« *5 

notified to provide success Al ZerlJAX" tHt 
telephone instruments on which the dll°A on °,^in types of 
The most important such instrument it the VX P™ 3 J nt not operate, 
is the new type instrument currently helm no del 500 which 

by the telephone company ^ J ’ 3 placed in public service 

concludedXhZ IZ'V^llnZt ZZadZtoZoXoXX “ *« 

instrument without modi fi cation a f+hl Z * the model 5 °0 
the necessity for modification of the -/-w ? rument itself . Of course , 

the primary value of the RFMT deiiee, naml^Tts^biT^t defeats 
microphone coverage without access fa +he Jt % ^ S ablIlt V to provide 
study made s there appears to hr nn i ' * • P reMlses * Based on the 

coverage where moieTsoo instruments andAth prospect for such 
are involved . instruments and others of similar circuitry 

ACTI ON 


Tolson 

Ladd 

Nichols 

Belmont 

Clegg 

Glavin 

Harbo 

Rosen 

Tracy 

Gearty 

Mohr 

Win terror d _ 
Tele. Room - 

Holloman 

Si 200 _ 



Miss Gandy _ 


This memorandum oomoletes nr-hinn nr ■*.», 
project and is submitted fo/ record purposes 11%?^°^ researoh 


IVCtvrh f 
80-781 
cg - 80-760 



C\ 


§ 


'x,/l 


i Yi 0 / -w 1 " I 


r r : { 

o 

f 

Q 

frf 

6 

0 

1 

& 




Jttl J If* 1033 
JUME 


b7D 


3AC* Chicai 


ffiFW 


Director* VBZ (80-781) /3 


n 


w 7/10/63* transmitting a modified 

clteeeeboar obteiaed from a confidential source wltfc the 
Illiaote ^1! Telephone G®mpmy ia Chicago. The examination 
of this device in the Laboratory indicates that it will 
probably be «piite effective on. telephone lines iffier© molarity 
is never reversed. However* in some areas such. as Vns'hington, 
"• ***» t ®® telephone company battery is reversed for one reason 
or another and swell a device as this modified *cJMesel»oa^ weald 
not be effective. 


Photographs of the unit have been mad# for record 
purpose© and a circuit diagram has been prepared. 

. Bureau appreciates your interest ia forwarding 

this device to the laboratory for examination. 

The modified "cheesebox" is being returned t© y mHU/StZSZ*^** 
by registered mail , If 


7 / / 

f 4 2> 



Toison _ 
Belmont 

Mohr 

Casper _ 
Callahan 
Conrad _ 
DeLoach 

Evans 

Gale 

Rosen 

Sullivan . 

Tavel 

Trotter _ 




mailed z? ‘ 

J UL 191963 




FD-36 (Rev. 12-13-56) 


i 


F B I 

D ate: 7/10/63 


Transmit the following in 

A I R T E L 


(Type in plain text or code ) 


Via 


(Priority or Method of Mailing) 


.-L. 


TO 


DIRECTOR t FBI 


FROM: SAC. CHICAGO 


ODIFI 




CH2ISEBOX’ 


TECHNICAL EQUIPMENT 


6 f 


ATTN : FBI LABORATORY 

ELECTRONIC SECTION 


’JUNE” 


o^/dmt££s2s 


$ f;/ • • •• / ■ 

There is being transmitted herewith a ‘modified 
"cheesebox" obtaned from a confidential source with I Hinds 
Bell Telephone Company , Chicago. The original "cheesebox',’ 
designed and used by "bookies" , utilized remote connections 
with telephones installed, the services connected through the 
"cheesebox". The modification is similarly attached to^any 
multiple of both the subscriber's and a nearby installed 
monitor telephone. Subscriber's line is connected to 
terminals near switch end of box and monitor line connected 
to opposite end of box. Polarity, to ground , must be care- 
fully observed and connections made as indicated on box. 

Test in Chicago through the switchboard and individual 
lines with the unit installed as described , enabled the monitor 
number to be dialed , and automatically cutting into monitor 
subscriber's incoming and outgoing communicatons . The "On- 
off" switch, when in "on" position simulates original 
"cheesebox" setup . "Off" position is the new monitor setup. 
Switch in "On" position results in busy signals when the 
phone number is dialed, either that of subscriber, or the 
monitor number . The monitor setup does not ring the monitor 
phones yet the circuitry places the number on the line, 
as a third party on the conversation. 

This setup and adaptation is not to be discussed 
with any other telephone company officials , personnel or 
employees. The box was loaned to the Chicago office for 
examination and necessary testing, and for information of the 
Bureau . The unit must be returned by Chicago office in 

1 - Package A f TEC- 

-1 ~ Chicago 



,/ i 

CT- 


:sck 


Approved: 




/ 7 4 y 

- Ol />Z- /3 ^ 


ENCL0SU*iai Ik ent in Charge 




m SSPf/; 


ST 


v - ’F 




b7D 




b7D 


CG 


very immediate future and it is requested that the Laboratory 
examine unit, make necessary tests, and immediately return 
to Chicago by most expeditious means , attention S-4 desk.